The hidden worlds within natural history museums - Joshua Drew

自然历史博物馆中隐藏的世界 - Joshua Drew

260,214 views

2014-12-02 ・ TED-Ed


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The hidden worlds within natural history museums - Joshua Drew

自然历史博物馆中隐藏的世界 - Joshua Drew

260,214 views ・ 2014-12-02

TED-Ed


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翻译人员: Jian Zhipeng 校对人员: Jenny Yang
00:07
When you think of natural history museums,
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当你想到自然历史博物馆时
00:09
you probably picture exhibits filled with ancient lifeless things,
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你可能会想起各种古老 又毫无生命的陈列品
00:14
like dinosaurs
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比如,恐龙
00:15
meteroites,
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陨石
00:16
and gemstones.
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和宝石
00:17
But behind that educational exterior,
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在充满教育意义的外表的背后
00:20
which only includes about 1% of a museum's collection,
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这些仅仅占博物馆收藏品的1%
00:25
there are hidden laboratories where scientific breakthroughs are made.
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这里隐藏着 进行许多科学技术突破的实验室
00:29
Beyond the unmarked doors,
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在没有标示的门后
00:31
and on the floors the elevators won't take you to,
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在搭乘电梯无法到达的楼层上
00:34
you'd find windows into amazing worlds.
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你会发现一个让你 进入令人惊奇的世界的窗口
00:37
This maze of halls and laboratories is a scientific sanctuary
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这个由走廊和实验室构建而成的 迷宫堪称科研的圣殿
00:42
that houses a seemingly endless variety of specimens.
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因为它储藏着无穷而多样的标本
00:45
Here, researchers work to unravel mysteries of evolution,
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在这里,科研人员致力于 解开进化论的谜团
00:49
cosmic origins,
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宇宙的起源
00:51
and the history of our planet.
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和地球的历史
00:53
One museum alone may have millions of specimens.
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任何一座自然历史博物馆 都可能有数百万的标本
00:57
The American Museum of Natural History in New York City
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座落于纽约市的 美国自然历史博物馆
01:00
has over 32,000,000 in its collection.
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收藏的标本就超过三千两百万件
01:04
Let's take a look at just one of them.
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让我们看看其中的一件
01:06
Scientists have logged exactly where and when it was found
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科学家们准确地记录下 找到这件标本的时间和地点
01:09
and used various dating techniques to pinpoint when it originated.
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并采用各种年代测定技术, 精确判断它发源于何时
01:14
Repeat that a million times over, and these plants,
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他们重复以上步骤一百万次以上,这些植物们
01:17
animals,
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动物,
01:18
minerals,
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矿石,
01:19
fossils,
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化石,
01:20
and artifacts present windows into times and places around the world
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和文物所呈现的是世界各地在不同时期的样貌
01:25
and across billions of years of history.
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并且跨越数十亿年的历史
01:28
When a research problem emerges,
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当一个研究问题浮现时
01:29
scientists peer through these windows and test hypotheses about the past.
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科研家们透过这些标本 所呈现的画面并测试对过去的假设
01:34
For example, in the 1950s, populations of predatory birds,
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例如,在1950年代, 对鸟类的捕食
01:39
like peregrine falcons,
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例如,游隼,
01:41
owls,
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猫头鹰,
和老鹰的数量开始 神秘地骤减
01:42
and eagles started to mysteriously crash,
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01:45
to the point where a number of species, including the bald eagle,
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若干鸟类甚至濒临灭绝
01:48
were declared endangered.
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其中包括秃头鹰
01:50
Fortunately, scientists in The Field Museum in Chicago
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万幸的是,美国芝加哥 自然历史博物馆的科学家们
01:54
had been collecting the eggs of these predatory birds for decades.
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几十年来一直在收集这些 捕食鸟类所产的蛋
他们发现蛋壳以前比较厚
01:58
They discovered that the egg shells used to be thicker
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02:01
and had started to thin around the time
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而从杀虫剂DDT开始 被用于农作物上时
02:04
when an insecticide called DDT started being sprayed on crops.
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蛋壳开始变薄
02:09
DDT worked very well to kill insects,
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DDT杀虫效果非常显著
02:12
but when birds came and ate those heaps of dead bugs,
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但当鸟类吃了成堆的这些死虫
02:16
the DDT accumulated in their bodies.
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DDT进而在鸟类体内堆积
02:19
It worked its way up the food chain
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DDT成为了食物链的一部分
02:21
and was absorbed by apex predator birds in such high concentrations
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位于食物链顶端的捕食鸟类吸收了高浓度的DDT
02:26
that it thinned their eggs
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以至于产下的蛋壳都变薄了
02:28
so that they couldn't support the nesting bird's weight.
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薄得无法承受巢鸟的重量
碎鸡蛋遍地都是
02:32
There were omelettes everywhere
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02:33
until scientists from The Field Museum in Chicago,
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直到美国芝加哥自然历史博物馆的科学家们
02:36
and other institutions,
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和其他机构的专家
02:37
helped solve the mystery and save the day.
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一起解开了谜团, 挽救了局面
02:40
America thanks you, Field Museum.
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美国感谢您,自然历史博物馆
02:42
Natural history museums windows into the past
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自然历史博物馆给了我们 窥视历史的窗口
02:45
have solved many other scientific mysteries.
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从而解决了许多其他科研的谜团
02:48
Museum scientists have used their collections
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博物馆科学家们曾利用馆藏
02:50
to sequence the Neanderthal genome,
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计算出穴居人的染色体序列
02:53
discover genes that gave mammoths red fur,
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发现了猛玛象的红毛基因
02:56
and even pinpoint where ancient giant sharks gave birth.
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甚至精确的定位 古老巨鲨的分娩的地方
03:01
There are about 900 natural history museums in the world,
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世界各地大约有900座 自然历史博物馆
03:04
and every year they make new discoveries and insights
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每一年,它们都会有新的发现和
有关于地球的过去,现在, 和未来的见解
03:07
into the Earth's past, present and future.
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03:10
Museum collections even help us understand how modern threats,
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博物馆藏品甚至能帮助 我们理解现世的危机
03:14
such as global climate change,
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例如,全球气候变化
03:16
are impacting our world.
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正在影响着我们的世界
03:17
For instance, naturalists have been collecting samples
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举个例子,在过去的100年里,
自然学家从瓦尔登湖采集样本
03:20
for over 100 years from Walden Pond,
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03:24
famously immortalized by Henry David Thoreau.
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瓦尔登湖因为美国先验论者 大卫‧梭罗而闻名于世
03:27
Thanks to those naturalists, who count Thoreau among their number,
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由于这些自然学家参考了 梭罗的纪录
03:30
we know that the plants around Walden Pond
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我们才知道瓦尔登湖一带的植物
03:32
are blooming over three weeks earlier than they did 150 years ago.
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比起150年前, 开花期提早了3个星期
03:38
Because these changes have taken place gradually,
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因为这些变化发生得很缓慢
03:40
one person may not have noticed them over the span of a few decades,
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人们在几十年间可能无法 察觉这类变化
03:44
but thanks to museum collections,
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但是多亏了博物馆的藏品
03:46
we have an uninterrupted record showing how our world is changing.
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我们才有连续的纪录, 向我们展示世界不断的变化
03:51
So the next time you're exploring a natural history museum,
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所以下一次当你探索一所 自然历史博物馆时
03:54
remember that what you're seeing is just one gem
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记住,你所看到的只是 巨大科研宝藏中的
03:57
of a colossal scientific treasure trove.
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一颗宝石
04:00
Behind those walls and under your feet are windows into forgotten worlds.
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在那些墙的背后,在你的脚下, 是进入被人遗忘的世界的窗口
04:05
And who knows?
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谁知道呢?
04:06
One day some future scientist may peer through one and see you.
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也许在未来某天,科学家们 会从其中的一个窗口看到你
(音乐)
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