What Earth in 2050 could look like - Shannon Odell

823,671 views ・ 2024-03-28

TED-Ed


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翻译人员: Tong PL 校对人员: suya f.
00:07
While we’re already feeling the devastating effects
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尽管我们已经感受到了
00:09
of human-caused climate change,
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人为气候变化毁灭性的影响
00:11
governments continue to fall short on making and executing emissions pledges
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但政府仍然未能 做出和执行有助于遏制
00:15
that would help thwart further warming.
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进一步暖化的排放量承诺。
00:17
So, what will our world look like in the next 30 to 80 years,
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那么,如果我们继续目前的道路,
未来 30 到 80 年 我们的世界会是什么样子呢?
00:21
if we continue on the current path?
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00:23
While it’s impossible to know exactly how the next decade will unfold,
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尽管不可能确切知道 未来十年将是如何展开,
00:27
scientists and climate experts have made projections,
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但科学家和气候专家 已经根据当前的状况
00:30
factoring in the current state of affairs.
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做出了预测。
00:33
This future we’re about to describe is bleak,
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我们即将描述的这个未来是黯淡的,
00:35
but remember there’s still time to ensure it doesn’t become our reality.
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但请记住,我们还有时间来确保 它不会成为我们的现实。
00:40
It’s 2050.
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现在是 2050 年。
00:41
We’ve blown past the 1.5 degree target that world leaders promised to stick to.
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我们已经突破了世界领导人们 承诺要坚持的 1.5 度目标。
00:45
The Earth has warmed 2 degrees since the 1800s,
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自 1800 年代世界首次开始 大规模燃烧化石燃料以来,
00:49
when the world first started burning fossil fuels in mass scale.
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地球已经升温了 2 度。
00:52
Reports on heatwaves and wildfires regularly fill the evening news.
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晚间新闻中经常有 关于热浪和野火的报道。
00:57
Summer days exceed 40 degrees in London and 45 degrees in Delhi,
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伦敦的夏日超过 40 度, 德里的夏日超过 45 度,
01:01
as extreme heat waves are now 8 to 9 times more common.
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因在现在极端热浪的 普遍程度增加了 8 到 9 倍。
01:05
These high temperatures prompt widespread blackouts,
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这些高温引发了 大规模的停电,
01:08
as power grids struggle to keep up with the energy demands
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因为电网难以满足 足够冷却住宅
01:10
needed to properly cool homes.
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所需的能源。
01:13
Ambulance sirens blare through the night,
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救护车警报器彻夜响起,
01:15
carrying patients suffering from heatstroke, dehydration, and exhaustion.
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载着患有中暑、 脱水和疲劳的患者。
01:19
The southwestern United States, southern Africa, and eastern Australia
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美国西南部、非洲南部和 澳大利亚东部
01:23
experience longer, more frequent, and more severe droughts.
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经历了更长、更频繁、 更严重的干旱。
01:27
Meanwhile, the Philippines, Indonesia, and Japan
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同时,菲律宾、 印度尼西亚和日本
01:30
face more frequent heavy rainfall
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面临更频繁的强降雨,
01:32
as rising temperatures cause water to evaporate faster,
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因为气温上升导致水 更快地蒸发,
01:35
and trap more water in the atmosphere.
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并将更多的水滞留在大气中。
01:37
As the weather becomes more erratic,
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随着天气变得越来越不稳定,
01:39
some communities are unable to keep pace with rebuilding
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一些社区无法跟上步伐以重建
01:42
what’s constantly destroyed.
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那些不断被毁坏的事物。
01:44
Many move to cities,
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许多人移居城市,
01:45
where they face housing shortages and a lack of jobs.
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在那里他们面临住房短缺 和缺乏就业机会。
01:48
A resource squeeze is felt in newborn intensive care wards,
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新生儿重症监护病房 感受到资源紧张
01:51
as the rising temperature and air pollution
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因为温度升高 和空气污染
01:53
cause higher rates of premature and underweight births.
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导致更高的早产率和 体重不足率。
01:57
More children develop asthma and respiratory disease,
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越来越多的儿童 患上哮喘和呼吸道疾病,
01:59
and rates balloon in communities regularly exposed to forest fire smoke.
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而那些经常暴露于森林火灾 烟雾的社区的患病率也激增。
02:04
The global emissions added to the atmosphere each year
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由于政府的行动, 每年增加到大气中的全球排放量
02:06
finally start to level off, thanks to government action,
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终于开始趋于平稳,
02:09
but it’s decades too late.
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但为时已晚。
02:11
We fail to reach net zero in time.
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我们未能及时达到净零排放量。
02:13
As a result, by 2100 the Earth has warmed another 0.5 to 1.5 degrees.
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结果,到 2100 年, 地球又升温了 0.5 至 1.5 度。
02:19
Over half of our remaining glaciers have melted.
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我们剩下的冰川 有一半以上已经融化。
02:22
As the sea heats up, its volume increases due to thermal expansion.
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随着海洋的升温, 其体积由于热膨胀而增加。
02:26
Together, this elevates sea level by well over a meter.
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总而言之,这使海平面 上升了一米以上。
02:29
Entire nations, like the Marshall Islands and Tuvalu, are uninhabitable
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整个国家,例如马绍尔群岛 和图瓦卢,都无法居住,
02:33
as large swaths of their islands are submerged.
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因为它们的大片岛屿都被淹没了。
02:36
Some islands, like the Maldives,
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一些岛屿,比如马尔代夫,
02:38
spend billions building interconnected rafts
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花费数十亿美元建造 相互连接的木筏,
02:41
that house apartments, schools, and restaurants
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这些木筏上建有公寓、 学校和餐厅
02:43
that float above its drowned cities.
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漂浮在被淹没的城市之上。
02:45
Resettled climate migrants in Jakarta, Mumbai, and Lagos
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在雅加达、孟买和拉各斯 重新定居的气候移民
02:49
are forced to abandon their homes once again,
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被迫再次放弃他们的家园
02:52
as rising tides and extreme storms flood buildings and crumble infrastructure.
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因为涨潮和极端的风暴 淹没建筑物并摧毁了基础设施
02:56
Overall, 250 million people are displaced.
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总体而言,有 2.5 亿人流离失所。
03:00
Some affluent cities like New York and Shanghai attempt to adapt,
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一些富裕的城市,例如纽约 和上海,试图进行调整,
03:04
elevating buildings and roadways.
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抬高建筑物和道路。
03:06
Ten-meter-tall seawalls line the cities’ coasts.
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十米高的海堤沿着城市的海岸线。
03:10
Children learn about extinct sea life which once inhabited the ocean’s reefs,
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孩子们了解着那些曾经居住 在海洋珊瑚礁中已灭绝的海洋生物,
03:13
all of which have vanished thanks to rising surface water temperatures.
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归功于表面水温的上升, 这些生物都消失了。
03:18
Grocery prices skyrocket,
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随着食品和水资源短缺
03:20
as food and water scarcity touch all communities.
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触及所有社区,杂货价格飞涨。
03:23
Fruits and products long grown in the tropics and subtropics
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长期在热带和亚热带地区 种植的水果和产品
03:26
rarely show up on shelves,
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很少出现在货架上,
03:28
as intense heat waves paired with increasing humidity
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因为强烈的热浪加上湿度的增加
03:31
make it deadly for farmers to work outdoors.
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使农民在户外工作变得致命。
03:33
Unpredictable heatwaves, droughts, and floods
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不可预测的 热浪、干旱和洪水
03:36
cripple small-scale farmers in Africa, Asia, and South America,
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使非洲、亚洲和南美的小农户陷入瘫痪,
03:40
who previously produced one-third of the world’s food.
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他们以前生产的粮食 占世界粮食的三分之一。
03:43
Hundreds of millions of people are pushed into hunger and famine.
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数亿人陷入饥饿和饥荒。
03:47
Climate predictions can feel overwhelming and terrifying.
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气候预测可能会 让人感到不知所措和恐惧。
03:51
Yet many of the experts responsible for these assessments remain optimistic.
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然而,许多负责这些评估的专家 仍然持乐观态度。
03:55
Since countries have first begun taking steps to lower their emissions,
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自各国首次开始采取措施 降低排放量以来,
03:58
warming projections have shifted downwards.
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全球变暖的预测已向下调整。
04:01
In less than a decade, we’ve reduced our projected emission rates
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在不到十年的时间里, 我们降低了我们预计的排放率,
04:04
so that we’re no longer on track to hit nearly 4 degrees of warming.
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因此,我们不再朝着 接近 4 度的升温目标前进。
04:08
Policies that invest in renewable energy sources,
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投资可再生能源、
04:11
cut fossil fuel production, support electric transportation,
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削减化石燃料产量、 支持电力交通、
04:14
protect our forests, and regulate industry
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保护我们的森林 和监管工业的政策
04:17
can help mitigate the worst effects of climate change.
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可以帮助减轻气候变化的最坏影响。
04:20
But climate experts have also stressed that current policies and pledges
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但是气候专家也强调, 目前的政策和承诺
04:25
don’t go far enough— in speed or scale.
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在速度或规模上都走得不够远。
04:28
Enacting real change will require bold solutions,
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实现真正的变革 需要大胆的解决方案、
04:31
innovations, and collective action.
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创新和集体行动。
04:33
There’s still time to rewrite our future, and every tenth of a degree counts.
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我们仍有时间重新书写我们的未来, 且每一度的温度变化都至关重要.
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