How you can help save the bees, one hive at a time | Noah Wilson-Rich

63,084 views ・ 2019-04-10

TED


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翻译人员: mingli wen 校对人员: yiming ma
00:12
Pollinator decline is a grand challenge in the modern world.
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授粉者减少是现代世界 所面临的一个巨大挑战。
00:16
Of the 200,000 species of pollinators,
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在20万种传粉物种中,
00:19
honeybees are the most well-understood,
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我们对蜜蜂最为了解,
00:22
partly because of our long history with them dating back 8,000 years ago
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部分原因是我们人类与蜜蜂的 悠长历史可以追溯到8000年前,
00:26
to our cave drawings in what is now modern-day Spain.
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在如今的西班牙发现的洞穴壁画中。
00:30
And yet we know that this indicator species is dying off.
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然而,我们知道蜜蜂 这一关键物种正面临灭绝。
00:34
Last year alone, we lost 40 percent of all beehives in the United States.
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仅去年一年,我们在美国境内 就失去了40%的蜂巢。
00:39
That number is even higher in areas with harsh winters,
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这个数据在严冬地区甚至更高,
00:42
like here in Massachusetts,
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比如在马萨诸塞州这里,
00:43
where we lost 47 percent of beehives
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我们在一年内就损失了
00:46
in one year alone.
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47%的蜂巢。
00:48
Can you imagine if we lost half of our people last year?
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你能想象如果去年人类数量 减少了一半会怎样吗?
00:52
And if those were the food-producing people?
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如果这些人都是负责食品生产的呢?
00:55
It's untenable.
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这是无法承受的状况。
00:57
And I predict that in 10 years,
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我预测在10年后,
01:00
we will lose our bees.
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蜜蜂将会灭绝。
01:04
If not for the work of beekeepers replacing these dead beehives,
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如果不是养蜂人替换掉 这些无用的蜂巢的话,
01:08
we would be without foods that we rely upon:
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我们将失去赖以生存的食物:
01:11
fruits, vegetables,
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水果,蔬菜,
01:13
crunchy almonds and nuts,
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松脆的杏仁和坚果,
01:15
tart apples,
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苹果派,
01:16
sour lemons.
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酸柠檬。
01:18
Even the food that our cattle rely upon to eat, hay and alfalfa -- gone,
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即使是牛所依赖的食物, 如干草和苜蓿,也都将消失,
01:24
causing global hunger,
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导致全球饥荒,
01:26
economic collapse,
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经济崩溃,
01:27
a total moral crisis across earth.
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道德危机席卷全球。
01:31
Now, I first started keeping bees here in Cape Cod
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我开始在科德角这里养蜂,
01:34
right after I finished my doctorate in honeybee immunology.
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是在我刚获得了 蜜蜂免疫学的博士学位之后。
01:37
(Laughter)
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(笑声)
(掌声)
01:40
(Applause)
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01:45
Imagine getting such a degree in a good economy --
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想象一下,在良好的经济环境下, 拿到这么一个学位——
01:49
and it was 2009:
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那是在2009年:
01:52
the Great Recession.
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经济大萧条时期。
01:54
And I was onto something.
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我要准备做点什么,
01:56
I knew that I could find out how to improve bee health.
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我知道我可以找到改善 蜂群生存状况的方法。
01:59
And so the community on Cape Cod here in Provincetown
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在普罗温斯敦的科德角社区,
02:03
was ripe for citizen science,
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公民科学的时机已经成熟,
02:04
people looking for ways to get involved and to help.
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人们都在想办法参与并提供帮助。
02:07
And so we met with people in coffee shops.
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因此我们在咖啡店与一些人会面。
02:10
A wonderful woman named Natalie got eight beehives at her home in Truro,
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一位叫娜塔莉的了不起的女士, 她在特鲁罗的家里有8个蜂箱,
02:13
and she introduced us to her friend Valerie,
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她还把我们介绍给 一位叫瓦莱利的朋友,
02:15
who let us set up 60 beehives at an abandoned tennis court on her property.
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瓦莱利允许我们在她名下的 一个废弃网球场上搭建了60个蜂箱。
02:21
And so we started testing vaccines for bees.
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于是,我们开始测试蜜蜂疫苗。
02:25
We were starting to look at probiotics.
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我们开始研究益生菌。
02:27
We called it "bee yogurt" --
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我们叫它“蜜蜂酸奶”——
02:29
ways to make bees healthier.
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让蜜蜂更健康的方法。
02:31
And our citizen science project started to take off.
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我们的公民科学计划开始启动。
02:35
Meanwhile, back in my apartment here,
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与此同时,回到我所住的公寓,
02:38
I was a bit nervous about my landlord.
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我有点担心房东的态度。
02:40
I figured I should tell him what we were doing.
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我觉得我应该告诉他 我们正在做的事情。
02:43
(Laughter)
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(笑声)
02:44
I was terrified; I really thought I was going to get an eviction notice,
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我忐忑不安;我真以为会收到驱逐令,
02:47
which really was the last thing we needed, right?
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这真是我们最不想要的,对吧?
02:50
I must have caught him on a good day, though,
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我一决定要在美好的 一天逮住他说话,
02:52
because when I told him what we were doing
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不过当我告诉他我们在做什么
02:54
and how we started our nonprofit urban beekeeping laboratory,
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以及我们是如何建立 非盈利城市养蜂实验室的时候,
02:57
he said, "That's great! Let's get a beehive in the back alley."
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他说,“太棒了! 我们在后巷也弄一个蜂箱吧。”
03:01
I was shocked.
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我很震惊。
03:02
I was completely surprised.
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我完全惊呆了。
03:04
I mean, instead of getting an eviction notice,
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我是说,不但没有收到驱逐令,
03:06
we got another data point.
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还增加了一个数据点。
03:08
And in the back alley of this image,
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在这张照片中的后巷,
03:10
what you see here, this hidden beehive --
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你在这里看到的,这个隐藏的蜂箱——
03:13
that beehive produced more honey that first year
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那个蜂箱第一年产的蜜
03:15
than we have ever experienced in any beehive we had managed.
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比我们管理的任何蜂箱的蜜都要多。
03:19
It shifted our research perspective forever.
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这永远改变了我们的研究视角。
03:21
It changed our research question away from "How do we save the dead and dying bees?"
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它把我们的研究问题 从“如何拯救死去的和垂死的蜜蜂?”
03:26
to "Where are bees doing best?"
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转变成“哪里最适合蜜蜂生长?”
我们开始能够把地图拼起来,
03:29
And we started to be able to put maps together,
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03:31
looking at all of these citizen science beehives
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看看所有这些公民科学家的蜂箱,
03:34
from people who had beehives at home decks,
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从在阳台放蜂箱的,
03:36
gardens, business rooftops.
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到在花园,商业屋顶放蜂箱的。
03:38
We started to engage the public,
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我们开始让公众参与进来,
03:40
and the more people who got these little data points,
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越多的人参与,提供越多的数据点
03:43
the more accurate our maps became.
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我们的地图就越精确。
03:44
And so when you're sitting here thinking, "How can I get involved?"
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如果在座的各位正在思考, “我怎样才能参与其中?”
03:47
you might think about a story of my friend Fred,
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你可以听一听我朋友弗雷德的故事,
03:50
who's a commercial real estate developer.
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他是一名商业地产开发商。
03:52
He was thinking the same thing.
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他也在想着同样的事情。
03:54
He was at a meeting,
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有一天他正在开会,
03:55
thinking about what he could do for tenant relations
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考虑要如何改善跟租客的关系
03:58
and sustainability at scale.
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和规模化的可持续性。
04:00
And while he was having a tea break,
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当他在茶歇的时候,
04:01
he put honey into his tea and noticed on the honey jar
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他把蜂蜜放进茶里, 注意到了在蜂蜜罐上
04:05
a message about corporate sustainability from the host company of that meeting.
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一则会议主办方关于 企业可持续性的信息。
04:08
And it sparked an idea.
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这激发了一个想法。
04:10
He came back to his office.
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他回到办公室。
04:12
An email, a phone call later, and -- boom! --
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发了一封电子邮件, 又打了一个电话,就这么简单——
04:15
we went national together.
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我们的计划在他的帮助下走向了全国。
04:18
We put dozens of beehives on the rooftops of their skyscrapers
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我们放了几十个蜂箱 在他们摩天大楼的屋顶上,
04:21
across nine cities nationwide.
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横跨全国九个城市。
04:24
Nine years later --
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九年以后——
04:25
(Applause)
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(掌声)
04:31
Nine years later, we have raised over a million dollars for bee research.
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九年以后,我们为蜜蜂研究 筹集了一百多万美元的资金。
04:36
We have a thousand beehives as little data points across the country,
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我们在全国有一千个蜂箱 作为小数据点,
04:41
18 states and counting,
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遍布18个州和郡,
04:43
where we have created paying jobs for local beekeepers, 65 of them,
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我们为当地的养蜂业 创造了有偿工作,一共有65个人
04:47
to manage beehives in their own communities,
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得以在自己的社区管理蜂箱,
04:50
to connect with people, everyday people,
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积极动员普通民众,
04:53
who are now data points together making a difference.
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这些民众现在也成为了数据点, 一起发挥作用。
04:57
So in order to explain what's actually been saving bees,
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为了说明究竟是什么拯救了蜜蜂,
05:00
where they're thriving,
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它们正在什么地方蓬勃发展,
05:01
I need to first tell you what's been killing them.
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我首先要告诉你的是: 什么杀死了它们。
05:04
The top three killers of bees
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蜜蜂的三大杀手
05:06
are agricultural chemicals such as pesticides, herbicides, fungicides;
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是农药,比如杀虫剂,除草剂和杀菌剂;
05:09
diseases of bees, of which there are many;
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大量种类的疾病;
05:12
and habitat loss.
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以及栖息地的丧失。
05:13
So what we did is we looked on our maps
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所以我们做的是研究地图
05:15
and we identified areas where bees were thriving.
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以及识别蜜蜂繁盛的地区。
05:18
This was mostly in cities, we found.
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我们发现这些地区大多位于城市中。
05:21
Data are now showing that urban beehives produce more honey
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目前数据显示,城市蜂箱生产的蜂蜜
05:24
than rural beehives and suburban beehives.
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比乡村和郊区的多。
05:26
Urban beehives have a longer life span than rural and suburban beehives,
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城市蜂箱比乡村和 郊区的蜂箱寿命更长,
05:31
and bees in the city are more biodiverse;
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城市蜜蜂更具有生物多样性;
05:34
there are more bee species in urban areas.
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城市地区的蜜蜂种类较多。
05:36
(Laughter)
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(笑声)
05:38
Right?
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有点奇怪吧?
05:39
Why is this?
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为什么呢?
05:41
That was our question.
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这正是我们思考的问题。
05:43
So we started with these three killers of bees,
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我们先研究了这三种蜜蜂杀手,
05:45
and we flipped it:
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并进行逆向思考:
05:46
Which of these is different in the cities?
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这些在城市里有哪些不同之处?
05:48
So the first one, pesticides.
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第一,杀虫剂。
05:50
We partnered up with the Harvard School of Public Health.
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我们与哈佛大学公共卫生学院合作,
05:52
We shared our data with them.
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与他们分享了数据。
05:54
We collected samples from our citizen science beehives
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我们从人们家里和商业建筑屋顶的 公民科学蜂箱
收集了很多样本,
05:57
at people's homes and business rooftops.
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05:58
We looked at pesticide levels.
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研究了杀虫剂水平。
我们认为,蜜蜂生长得更好的 地区杀虫剂可能会更少。
06:00
We thought there would be less pesticides in areas where bees are doing better.
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但事实并非如此。
06:04
That's not the case.
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06:05
So what we found here in our study is -- the orange bars are Boston,
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我们的研究发现—— 橙色柱状表示波士顿,
06:09
and we thought those bars would be the lowest,
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我们以为这些柱状代表的应该是
06:11
there would be the lowest levels of pesticides.
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杀虫剂含量最低的地方。
事实上,城市中杀虫剂使用量最多。
06:14
And, in fact, there are the most pesticides in cities.
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06:18
So the pesticide hypothesis for what's saving bees --
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因此关于拯救蜜蜂的杀虫剂假说——
06:21
less pesticides in cities --
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城市的杀虫剂更少——
06:22
is not it.
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不成立。
06:24
And this is very typical of my life as a scientist.
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这样的结论对于 一个科学家来说是很平常的。
06:28
Anytime I've had a hypothesis,
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很多时候,我的假设
不仅得不到证据支撑, 反倒相反的假设才是正确的。
06:30
not only is it not supported, but the opposite is true.
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06:33
(Laughter)
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(笑声)
06:34
Which is still an interesting finding, right?
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但这仍然是一个有趣的发现,对吧?
06:36
We moved on.
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于是我们继续前进,提出了
06:37
The disease hypothesis.
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疾病假说。
06:38
We looked at diseases all over our beehives.
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我们研究了所有蜂箱中出现的疾病。
06:41
And what we found in a similar study to this one with North Carolina State is:
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我们在对北卡罗来纳州的 类似研究中发现:
06:45
there's no difference between disease in bees
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无论是在城市,郊区,还是乡村地区,
06:47
in urban, suburban and rural areas.
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蜜蜂疾病都没有表现出任何区别。
疾病无处不在; 蜜蜂都在陆续生病和死亡。
06:49
Diseases are everywhere; bees are sick and dying.
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06:51
In fact, there were more diseases of bees in cities.
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事实上,城市里有更多的蜜蜂疾病。
06:54
This was from Raleigh, North Carolina.
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这是北卡罗来纳州罗利市的照片。
06:56
So again, my hypothesis was not supported. The opposite was true.
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所以,我又得出了恰好相反的假设。
07:00
We're moving on.
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我们又继续研究。
(笑声)
07:02
(Laughter)
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07:04
The habitat hypothesis.
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栖息地假说。
07:06
This said that areas where bees are thriving have a better habitat --
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这张图说的是蜜蜂生命旺盛的地区, 栖息地环境更好——
07:10
more flowers, right?
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应该有更多的花朵,对吗?
07:11
But we didn't know how to test this.
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但是我们不知该 如何对这一假设进行检验。
07:13
So I had a really interesting meeting.
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所以我们召开了一次有趣的会议。
07:15
An idea sparked with my friend and colleague Anne Madden,
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我与朋友兼同事安娜·麦登, 她也是TED演讲人,
07:18
fellow TED speaker.
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提出了这个想法。
07:19
We thought about genomics, kind of like AncestryDNA or 23andMe.
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我们想到了基因组技术,比如 “AncestryDNA”或者“23andMe”的那种。
07:24
Have you done these?
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你们做过这种检测吗?
就是往管子里吐痰,然后发现, “我是德国人(的后裔)!”
07:26
You spit in a tube and you find out, "I'm German!"
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07:28
(Laughter)
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(笑声)
07:29
Well, we developed this for honey.
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我们为蜜蜂也开发了类似的技术。
07:31
So we have a sample of honey and we look at all the plant DNA,
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取一份蜂蜜样本, 比对所有植物的DNA,
07:35
and we find out, "I'm sumac!"
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然后我们发现,“这是漆树(的花蜜)!”
07:37
(Laughter)
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(笑声)
07:38
And that's what we found here in Provincetown.
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这是我们在普罗温斯敦发现的。
07:40
So for the first time ever, I'm able to report to you
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所以我们有史以来第一次可以证明
07:43
what type of honey is from right here in our own community.
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哪一种蜂蜜来自我们这一社区。
07:46
HoneyDNA, a genomics test.
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我们运用的是“蜂蜜DNA”, 一个基因组检测技术。
07:48
Spring honey in Provincetown is from privet.
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普罗温斯敦的春蜜来自于女贞【植】。
07:51
What's privet? Hedges.
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什么是女贞?就是树篱。
07:53
What's the message?
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这意味着什么?
07:54
Don't trim your hedges to save the bees.
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为了拯救蜜蜂,不要修剪你的篱笆。
07:57
(Laughter)
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(笑声)
07:58
I know we're getting crunchy and it's controversial,
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我知道这有点尴尬, 也会存在争议,
所以在你朝我扔西红柿之前,
08:01
so before you throw your tomatoes,
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08:02
we'll move to the summer honey, which is water lily honey.
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我们来聊一聊夏蜜,即睡莲蜜。
08:05
If you have honey from Provincetown right here in the summer,
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如果你在夏天吃普罗温斯敦的蜂蜜,
08:08
you're eating water lily juice;
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你喝的就是睡莲汁;
08:10
in the fall, sumac honey.
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秋天,是漆树蜂蜜。
08:12
We're learning about our food for the first time ever.
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我们有史以来第一次深入研究蜂蜜。
08:15
And now we're able to report, if you need to do any city planning:
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如果你要做城市规划, 现在我们可以想你汇报:
08:19
What are good things to plant?
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种什么植物好?
08:21
What do we know the bees are going to that's good for your garden?
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我们知道的关于 蜜蜂对花园的好处有哪些?
08:24
For the first time ever for any community, we now know this answer.
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对于任何一个社区来说, 我们现在终于知道答案了。
08:28
What's more interesting for us is deeper in the data.
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对我们来说更有趣的是更深层次的数据。
08:31
So, if you're from the Caribbean and you want to explore your heritage,
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如果你来自加勒比海,想探索 自己继承的一片土地,
08:35
Bahamian honey is from the laurel family,
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巴哈马蜜是来自月桂科【植】,
08:37
cinnamon and avocado flavors.
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含肉桂和鳄梨风味。
08:40
But what's more interesting is 85 different plant species
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但是更有趣的是一茶匙蜂蜜里
08:43
in one teaspoon of honey.
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包含85种不同的植物品种。
08:45
That's the measure we want, the big data.
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这就是我们需要的测量方式,大数据。
08:47
Indian honey: that is oak.
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印度蜂蜜来自橡树。
08:50
Every sample we've tested from India is oak,
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我们测试的每一个印度样品 都是来自橡树,
08:53
and that's 172 different flavors in one taste of Indian honey.
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一口能尝出来印度蜂蜜里 含有172种不同风味。
08:57
Provincetown honey goes from 116 plants in the spring
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普罗温斯敦的蜂蜜 在春天采自116种植物,
09:01
to over 200 plants in the summer.
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夏天则超过200种植物。
09:04
These are the numbers that we need to test the habitat hypothesis.
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这是就我们需要检验栖息地假说的数据。
09:07
In another citizen science approach,
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在另一种公民科学方法中,
09:09
you find out about your food and we get some interesting data.
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你发现了食物的秘密, 而我们也获得了一些有趣的数据。
09:12
We're finding out now that in rural areas,
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我们现在发现在农村地区,
09:14
there are 150 plants on average in a sample of honey.
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一种蜂蜜样本平均含有150种植物。
09:18
That's a measure for rural.
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这是农村地区的数据。
09:20
Suburban areas, what might you think?
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那么郊区呢,你认为结果如何?
09:22
Do they have less or more plants in suburban areas with lawns
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在对民众友好但是不利于 花粉传播的郊区草坪上采集的
09:26
that look nice for people but they're terrible for pollinators?
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蜂蜜会包含多少植物?
09:30
Suburbs have very low plant diversity,
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结果是郊区的植物多样性很低,
09:32
so if you have a beautiful lawn,
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所以如果你的草坪很漂亮,
09:34
good for you, but you can do more.
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很不错,但你可以做更多的改善。
09:37
You can have a patch of your lawn that's a wildflower meadow
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你可以在草坪上开辟一片野花草地
09:40
to diversify your habitat,
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使你的栖息地多样化,
09:42
to improve pollinator health.
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从而改善传粉者的健康。
09:44
Anybody can do this.
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任何人都能做到这一点。
09:46
Urban areas have the most habitat, best habitat,
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城市地区拥有最多和最好的栖息地,
09:50
as you can see here: over 200 different plants.
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正如你在这里看到的: 超过200种不同的植物。
09:53
We have, for the first time ever, support for the habitat hypothesis.
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我们的栖息地假说 有史以来第一次得到认可。
09:57
We also now know how we can work with cities.
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我们现在也知道该如何与城市合作。
10:00
The City of Boston has eight times better habitat
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波士顿市的栖息地比周边的郊区
10:03
than its nearby suburbs.
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要优越8倍。
10:04
And so when we work with governments, we can scale this.
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当我们与政府合作的时候, 我们可以扩大这一规模。
10:08
You might think on my tombstone, it'll say,
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你可能会想,在我的墓碑上会刻着,
10:10
"Here lies Noah. Plant a flower." Right?
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“诺亚长眠于此。请种一朵花吧。” 对吧?
10:12
I mean -- it's exhausting after all of this.
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我是说,在经历了 这一切之后,我已筋疲力尽。
10:16
But when we scale together,
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但当我们一起扩大规模时,
10:17
when we go to governments and city planners --
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当我们去找政府和城市规划者的时候——
10:20
like in Boston, the honey is mostly linden trees,
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就像在波士顿,蜂蜜树源主要是椴树,
10:22
and we say, "If a dead tree needs to be replaced, consider linden."
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我们会说,“如果需要 替换一棵枯树,考虑用椴树。”
10:25
When we take this information to governments, we can do amazing things.
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当我们把这些信息递交给政府, 就相当于开展了一次壮举。
这是弗雷德公司的屋顶。
10:29
This is a rooftop from Fred's company.
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10:31
We can plant those things on top of rooftops worldwide
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我们可以在全世界的屋顶上种植那些植物,
10:34
to start restoring habitat and securing food systems.
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开始恢复栖息地,以及保障食物系统。
10:38
We've worked with the World Bank
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我们还与世界银行合作,
10:39
and the presidential delegation from the country of Haiti.
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以及与海地总统代表团合作。
10:42
We've worked with wonderful graduate students at Yale University and Ethiopia.
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我们与耶鲁大学以及 埃塞尔比亚的优秀毕业生合作。
在这些国家, 我们可以通过确定蜂蜜的种类
10:46
In these countries, we can add value to their honey
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10:48
by identifying what it is,
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来为他们的蜂蜜增值,
10:49
but informing the people of what to plant
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告诉人们该种植什么植物,
10:51
to restore their habitat and secure their food systems.
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从而恢复栖息地以及 保障他们的食物系统。
10:55
But what I think is even more important is when we think about natural disasters.
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我认为这对应对自然灾害来说更重要。
有史以来,我们第一次
10:59
For the first time,
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11:00
we now know how we can have a baseline measure of any habitat
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知道如何在任何栖息地有可能被摧毁前,
11:03
before it might be destroyed.
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做基线测量。
11:05
Think about your hometown.
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回想一下你的家乡。
11:06
What risks does the environment pose to it?
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环境面临着哪些风险?
11:10
This is how we're going to save Puerto Rico after Hurricane Maria.
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这是玛利亚飓风过境后, 我们拯救波多黎各的方法。
11:14
We now have a baseline measure of honey,
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现在我们有了蜂蜜的基线测量,
11:17
honey DNA from before and after the storm.
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飓风前后蜂蜜的DNA。
11:20
We started in Humacao.
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我们从乌马考市开始。
11:22
This is right where Hurricane Maria made landfall.
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这正是玛利亚飓风登陆的地点。
11:24
And we know what plants to replace and in what quantity and where
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我们通过三角测量法分析蜂蜜的 DNA样本,搞清了该复原哪些植物
11:28
by triangulating honey DNA samples.
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以及需要的数量和地点。
11:32
You might even think about right here,
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你可能会想,
11:34
the beautiful land that connected us, that primed us,
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这一片连接和哺育我们的美丽大地,
11:36
all the citizen science to begin with,
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所有公民科学开始的地方,
11:38
the erosion, the winter storms
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侵蚀,冬季风暴
11:40
that are getting more violent every year.
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正在逐年恶化。
11:43
What are we going to do about this,
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我们该采取什么措施,
11:45
our precious land?
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来保护如此珍贵的土地呢?
11:46
Well, looking at honey DNA,
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我们通过观测蜂蜜DNA,
11:48
we can see what plants are good for pollinators that have deep roots,
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就可以找出哪些植物的根 长得很深,可以保持水土,
11:51
that can secure the land,
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又对授粉者有益,
11:53
and together, everybody can participate.
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我们所有人都可以参与进来,
11:55
And the solution fits in a teaspoon.
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一起拯救这一茶匙的蜂蜜。
11:58
If your hometown might get swept away or destroyed by a natural disaster,
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如果你的家乡可能会 被自然灾害卷走或者摧毁,
12:03
we now have a blueprint suspended in time
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我们现在就有了一份如何在地球上,
12:06
for how to restore that on Earth,
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甚至在火星上的温室里
12:09
or perhaps even in a greenhouse on Mars.
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重建家园的蓝图。
12:14
I know it sounds crazy, but think about this:
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我明白,这听起来 太不可思议,但是想想看:
12:17
a new Provincetown,
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在未来可能会是这样一番景象:
12:19
a new hometown,
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一个全新的普罗温斯敦,
12:21
a place that might be familiar that's also good for pollinators
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一个全新的家乡,
12:24
for a stable food system,
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一个似曾相识且对授粉者有利的地方,
12:25
when we're thinking about the future.
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拥有稳定的食物系统,
12:29
Now, together, we know what's saving bees --
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团结协作让我们懂得了 如何拯救蜜蜂——
12:32
by planting diverse habitat.
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通过拥有植物多样性的栖息地。
12:34
Now, together, we know how bees are going to save us --
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团结协作让我们懂得了 蜜蜂将如何拯救人类——
12:38
by being barometers for environmental health,
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通过作为环境健康的标记,
12:42
by being blueprints, sources of information,
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作为信息源泉的蓝图,
12:44
little data factories suspended in time.
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成为小数据工厂只是时间问题。
12:48
Thank you.
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谢谢各位。
12:49
(Applause)
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(掌声)
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