What Earth in 2050 could look like - Shannon Odell

776,025 views ・ 2024-03-28

TED-Ed


Please double-click on the English subtitles below to play the video.

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While we’re already feeling the devastating effects
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of human-caused climate change,
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governments continue to fall short on making and executing emissions pledges
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that would help thwart further warming.
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So, what will our world look like in the next 30 to 80 years,
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if we continue on the current path?
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While it’s impossible to know exactly how the next decade will unfold,
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scientists and climate experts have made projections,
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factoring in the current state of affairs.
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This future we’re about to describe is bleak,
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but remember there’s still time to ensure it doesn’t become our reality.
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It’s 2050.
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We’ve blown past the 1.5 degree target that world leaders promised to stick to.
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The Earth has warmed 2 degrees since the 1800s,
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when the world first started burning fossil fuels in mass scale.
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Reports on heatwaves and wildfires regularly fill the evening news.
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Summer days exceed 40 degrees in London and 45 degrees in Delhi,
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as extreme heat waves are now 8 to 9 times more common.
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These high temperatures prompt widespread blackouts,
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as power grids struggle to keep up with the energy demands
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needed to properly cool homes.
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Ambulance sirens blare through the night,
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carrying patients suffering from heatstroke, dehydration, and exhaustion.
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The southwestern United States, southern Africa, and eastern Australia
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experience longer, more frequent, and more severe droughts.
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Meanwhile, the Philippines, Indonesia, and Japan
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face more frequent heavy rainfall
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as rising temperatures cause water to evaporate faster,
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and trap more water in the atmosphere.
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As the weather becomes more erratic,
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some communities are unable to keep pace with rebuilding
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what’s constantly destroyed.
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Many move to cities,
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where they face housing shortages and a lack of jobs.
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A resource squeeze is felt in newborn intensive care wards,
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as the rising temperature and air pollution
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cause higher rates of premature and underweight births.
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More children develop asthma and respiratory disease,
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and rates balloon in communities regularly exposed to forest fire smoke.
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The global emissions added to the atmosphere each year
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finally start to level off, thanks to government action,
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but it’s decades too late.
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We fail to reach net zero in time.
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As a result, by 2100 the Earth has warmed another 0.5 to 1.5 degrees.
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Over half of our remaining glaciers have melted.
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As the sea heats up, its volume increases due to thermal expansion.
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Together, this elevates sea level by well over a meter.
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Entire nations, like the Marshall Islands and Tuvalu, are uninhabitable
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as large swaths of their islands are submerged.
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Some islands, like the Maldives,
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spend billions building interconnected rafts
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that house apartments, schools, and restaurants
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that float above its drowned cities.
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Resettled climate migrants in Jakarta, Mumbai, and Lagos
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are forced to abandon their homes once again,
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as rising tides and extreme storms flood buildings and crumble infrastructure.
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Overall, 250 million people are displaced.
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Some affluent cities like New York and Shanghai attempt to adapt,
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elevating buildings and roadways.
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Ten-meter-tall seawalls line the cities’ coasts.
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Children learn about extinct sea life which once inhabited the ocean’s reefs,
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all of which have vanished thanks to rising surface water temperatures.
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Grocery prices skyrocket,
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as food and water scarcity touch all communities.
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Fruits and products long grown in the tropics and subtropics
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rarely show up on shelves,
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as intense heat waves paired with increasing humidity
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make it deadly for farmers to work outdoors.
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Unpredictable heatwaves, droughts, and floods
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cripple small-scale farmers in Africa, Asia, and South America,
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who previously produced one-third of the world’s food.
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Hundreds of millions of people are pushed into hunger and famine.
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Climate predictions can feel overwhelming and terrifying.
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Yet many of the experts responsible for these assessments remain optimistic.
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Since countries have first begun taking steps to lower their emissions,
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warming projections have shifted downwards.
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In less than a decade, we’ve reduced our projected emission rates
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so that we’re no longer on track to hit nearly 4 degrees of warming.
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Policies that invest in renewable energy sources,
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cut fossil fuel production, support electric transportation,
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protect our forests, and regulate industry
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can help mitigate the worst effects of climate change.
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But climate experts have also stressed that current policies and pledges
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don’t go far enough— in speed or scale.
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Enacting real change will require bold solutions,
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innovations, and collective action.
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There’s still time to rewrite our future, and every tenth of a degree counts.
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