What Earth in 2050 could look like - Shannon Odell

TED-Ed
28 Mar 202404:59

Summary

TLDRThe video script paints a grim future of climate change by 2050, with the Earth warming 2 degrees, causing extreme heatwaves, wildfires, and droughts. Rising temperatures lead to blackouts, health crises, and displacement of millions. Despite global emissions leveling off, the failure to reach net zero results in further warming by 2100, melting glaciers, and sea-level rise, threatening island nations and displacing 250 million people. The script urges bold solutions and collective action to mitigate these devastating effects and reshape our future.

Takeaways

  • 🌡️ Governments have not yet effectively addressed the urgent issue of climate change, with emissions pledges falling short.
  • 🌍 By 2050, the Earth is projected to have warmed by 2 degrees Celsius since pre-industrial times, leading to severe heatwaves and wildfires.
  • 🌡️ Extreme heat will become more frequent, with summer temperatures in cities like London and Delhi reaching dangerous levels.
  • 🔌 High temperatures will strain power grids, causing widespread blackouts and energy shortages.
  • 🚑 Increased heat-related health issues, such as heatstroke, dehydration, and exhaustion, will put a strain on healthcare systems.
  • 🌳 Droughts will become more severe in regions like the southwestern U.S., southern Africa, and eastern Australia.
  • 🌧️ Heavy rainfall will become more frequent in countries like the Philippines, Indonesia, and Japan, leading to flooding and damage.
  • 🏘️ Climate-induced migration will lead to housing shortages and unemployment in urban areas as communities struggle to rebuild.
  • 👶 Rising temperatures and pollution will increase the rates of premature and underweight births, as well as respiratory diseases in children.
  • 🌐 Despite some progress in reducing emissions, the world will fail to reach net zero in time, leading to further warming by 2100.
  • 🏞️ Sea level rise due to glacier melt and thermal expansion will make some island nations uninhabitable and displace millions of people.
  • 🛒 Food and water scarcity will lead to skyrocketing grocery prices, affecting global communities and causing famine in many regions.
  • 🌱 The impact of climate change on agriculture will be severe, with unpredictable weather patterns disrupting food production and leading to widespread hunger.
  • 💡 There is still hope for change; experts are optimistic that with bold solutions, innovations, and collective action, we can mitigate the worst effects of climate change.

Q & A

  • What is the current impact of human-caused climate change?

    -Human-caused climate change is already causing devastating effects, such as extreme weather events, and governments are struggling to meet and execute emissions pledges to prevent further warming.

  • What is the projected temperature increase by 2050 if we continue on the current path?

    -By 2050, the Earth is expected to have warmed by 2 degrees since the 1800s, surpassing the 1.5-degree target that world leaders had promised to adhere to.

  • How will heatwaves and wildfires become more common in the future?

    -Extreme heatwaves are projected to become 8 to 9 times more common, leading to more frequent reports of heatwaves and wildfires filling the evening news.

  • What challenges will power grids face due to high temperatures?

    -Power grids will struggle to keep up with the increased energy demands needed to cool homes, leading to widespread blackouts during extreme heat.

  • What health issues are expected to arise from the increased temperatures?

    -Higher temperatures will lead to more cases of heatstroke, dehydration, and exhaustion, with ambulance sirens carrying patients suffering from these conditions.

  • Which regions are expected to experience longer and more severe droughts?

    -The southwestern United States, southern Africa, and eastern Australia are expected to face longer, more frequent, and more severe droughts.

  • How will rising temperatures affect rainfall patterns in certain regions?

    -Regions like the Philippines, Indonesia, and Japan will face more frequent heavy rainfall as rising temperatures cause water to evaporate faster and trap more water in the atmosphere.

  • What socio-economic impacts are expected due to erratic weather?

    -Erratic weather will lead to housing shortages and a lack of jobs in cities, as communities are unable to keep pace with rebuilding what is constantly destroyed.

  • How will climate change affect newborns and children's health?

    -Newborn intensive care wards will face a resource squeeze due to higher rates of premature and underweight births caused by rising temperatures and air pollution. More children will develop asthma and respiratory diseases.

  • What are the long-term consequences if we fail to reach net zero emissions in time?

    -Failing to reach net zero emissions in time will result in an additional warming of 0.5 to 1.5 degrees by 2100, causing over half of the remaining glaciers to melt and sea levels to rise by over a meter, leading to displacement of millions of people.

  • What measures can help mitigate the worst effects of climate change?

    -Policies that invest in renewable energy, cut fossil fuel production, support electric transportation, protect forests, and regulate industry can help mitigate the worst effects of climate change.

  • Why are climate experts optimistic despite the overwhelming predictions?

    -Climate experts are optimistic because countries have started taking steps to lower emissions, leading to a downward shift in warming projections, and there is still time to enact bold solutions and collective action to prevent the bleak future described.

Outlines

00:00

🌍 Climate Change Impacts and Future Projections

This paragraph discusses the current and potential future effects of human-induced climate change, emphasizing the inadequacy of government action. It paints a grim picture of the world by 2050, with temperatures rising beyond the 1.5-degree target, leading to more frequent and intense heatwaves, wildfires, and droughts. The consequences include blackouts, health crises, and mass displacement of people due to extreme weather events and rising sea levels. The script also mentions the global efforts to reduce emissions, although it highlights that they are too late to prevent further warming and its devastating effects by 2100.

Mindmap

Keywords

💡Climate Change

Climate change refers to long-term alterations in the Earth's climate, particularly a rise in global temperatures. In the video, it is the central theme, with human activities being the primary cause of the devastating effects described. The script discusses the consequences of inaction, such as increased heatwaves and extreme weather events.

💡Emissions Pledges

Emissions pledges are commitments made by governments to reduce greenhouse gas emissions. The script highlights the shortfall of these pledges in preventing further global warming, emphasizing the urgency of more effective action.

💡1.5 Degree Target

The 1.5 degree target is a goal set by the Paris Agreement to limit global warming to well below 2 degrees Celsius, aiming for 1.5 degrees. The script mentions that we have exceeded this target, indicating a failure to control the warming effects.

💡Heatwaves

Heatwaves are prolonged periods of excessively hot weather. The video script describes how they have become more frequent and severe, leading to widespread blackouts and health crises like heatstroke.

💡Wildfires

Wildfires are uncontrolled fires in wildlands, often exacerbated by climate change. The script mentions them as a regular feature of news reports, illustrating the link between climate change and increased fire frequency and intensity.

💡Droughts

Droughts are periods of unusually low precipitation, causing water shortages. The script describes regions experiencing longer and more severe droughts, which affect agriculture, ecosystems, and water availability.

💡Extreme Heat

Extreme heat refers to unusually high temperatures that can have harmful effects on humans and the environment. The video script uses it to describe the new normal in various cities, affecting daily life and infrastructure.

💡Climate Migrants

Climate migrants are people who are forced to relocate due to climate-related factors such as sea-level rise and extreme weather. The script discusses the displacement of millions, highlighting the human impact of climate change.

💡Sea Level Rise

Sea level rise is the increase in the volume of water in the world's oceans, caused by melting glaciers and thermal expansion. The video script connects this to the submersion of island nations and the displacement of populations.

💡Food and Water Scarcity

Food and water scarcity refer to the insufficient availability of these resources to meet the needs of a population. The script mentions how climate change affects agriculture and water resources, leading to increased prices and famine.

💡Renewable Energy

Renewable energy is energy derived from natural resources that are replenished on a human timescale, such as wind, solar, and hydro. The video script suggests that investing in renewable energy is part of the solution to mitigate the effects of climate change.

💡Net Zero

Net zero refers to a state where the amount of greenhouse gases emitted is balanced by the amount removed from the atmosphere. The script indicates that failing to achieve this in time contributes to additional warming and climate impacts.

💡Collective Action

Collective action is the coordinated effort of multiple parties to achieve a common goal. The video script emphasizes the need for bold solutions and innovations that require collective action to address climate change effectively.

Highlights

Governments are falling short on making and executing emissions pledges to combat climate change.

If we continue the current path, the Earth will warm 2 degrees by 2050, with devastating effects.

Heatwaves and wildfires will become more frequent, with summer days exceeding 40 degrees in cities like London and Delhi.

Extreme heat will cause widespread blackouts as power grids struggle to meet energy demands for cooling.

Ambulance sirens will be a common sound at night, with people suffering from heatstroke, dehydration, and exhaustion.

Droughts will become longer, more frequent, and more severe in regions like the southwestern US, southern Africa, and eastern Australia.

Heavy rainfall will increase in the Philippines, Indonesia, and Japan due to rising temperatures and increased water evaporation.

Erratic weather will make rebuilding destroyed communities difficult, leading to migration to cities with housing shortages and job scarcity.

Newborn intensive care wards will face a resource squeeze due to higher rates of premature and underweight births caused by rising temperatures and air pollution.

More children will develop asthma and respiratory diseases due to regular exposure to forest fire smoke.

Global emissions will level off by 2050 due to government action, but it will be too late to reach net zero emissions.

By 2100, the Earth will warm an additional 0.5 to 1.5 degrees, melting over half of the remaining glaciers.

Sea levels will rise by over a meter, making entire nations uninhabitable and forcing the construction of floating cities.

Climate migrants will be displaced multiple times as rising tides and extreme storms flood buildings and crumble infrastructure.

250 million people will be displaced due to climate change, with cities like New York and Shanghai attempting to adapt with elevated buildings and seawalls.

Children will learn about extinct sea life that once inhabited ocean reefs, now vanished due to rising water temperatures.

Food and water scarcity will cause grocery prices to skyrocket, affecting all communities.

Unpredictable weather will cripple small-scale farmers, pushing hundreds of millions of people into hunger and famine.

Despite the overwhelming and terrifying climate predictions, experts remain optimistic as countries take steps to lower emissions.

Policies investing in renewable energy, cutting fossil fuel production, supporting electric transportation, and protecting forests can help mitigate climate change effects.

Current policies and pledges do not go far enough in speed or scale, requiring bold solutions, innovations, and collective action.

There is still time to change our future, with every tenth of a degree counting towards the outcome.

Transcripts

play00:07

While we’re already feeling the devastating effects

play00:09

of human-caused climate change,

play00:11

governments continue to fall short on making and executing emissions pledges

play00:15

that would help thwart further warming.

play00:17

So, what will our world look like in the next 30 to 80 years,

play00:21

if we continue on the current path?

play00:23

While it’s impossible to know exactly how the next decade will unfold,

play00:27

scientists and climate experts have made projections,

play00:30

factoring in the current state of affairs.

play00:33

This future we’re about to describe is bleak,

play00:35

but remember there’s still time to ensure it doesn’t become our reality.

play00:40

It’s 2050.

play00:41

We’ve blown past the 1.5 degree target that world leaders promised to stick to.

play00:45

The Earth has warmed 2 degrees since the 1800s,

play00:49

when the world first started burning fossil fuels in mass scale.

play00:52

Reports on heatwaves and wildfires regularly fill the evening news.

play00:57

Summer days exceed 40 degrees in London and 45 degrees in Delhi,

play01:01

as extreme heat waves are now 8 to 9 times more common.

play01:05

These high temperatures prompt widespread blackouts,

play01:08

as power grids struggle to keep up with the energy demands

play01:10

needed to properly cool homes.

play01:13

Ambulance sirens blare through the night,

play01:15

carrying patients suffering from heatstroke, dehydration, and exhaustion.

play01:19

The southwestern United States, southern Africa, and eastern Australia

play01:23

experience longer, more frequent, and more severe droughts.

play01:27

Meanwhile, the Philippines, Indonesia, and Japan

play01:30

face more frequent heavy rainfall

play01:32

as rising temperatures cause water to evaporate faster,

play01:35

and trap more water in the atmosphere.

play01:37

As the weather becomes more erratic,

play01:39

some communities are unable to keep pace with rebuilding

play01:42

what’s constantly destroyed.

play01:44

Many move to cities,

play01:45

where they face housing shortages and a lack of jobs.

play01:48

A resource squeeze is felt in newborn intensive care wards,

play01:51

as the rising temperature and air pollution

play01:53

cause higher rates of premature and underweight births.

play01:57

More children develop asthma and respiratory disease,

play01:59

and rates balloon in communities regularly exposed to forest fire smoke.

play02:04

The global emissions added to the atmosphere each year

play02:06

finally start to level off, thanks to government action,

play02:09

but it’s decades too late.

play02:11

We fail to reach net zero in time.

play02:13

As a result, by 2100 the Earth has warmed another 0.5 to 1.5 degrees.

play02:19

Over half of our remaining glaciers have melted.

play02:22

As the sea heats up, its volume increases due to thermal expansion.

play02:26

Together, this elevates sea level by well over a meter.

play02:29

Entire nations, like the Marshall Islands and Tuvalu, are uninhabitable

play02:33

as large swaths of their islands are submerged.

play02:36

Some islands, like the Maldives,

play02:38

spend billions building interconnected rafts

play02:41

that house apartments, schools, and restaurants

play02:43

that float above its drowned cities.

play02:45

Resettled climate migrants in Jakarta, Mumbai, and Lagos

play02:49

are forced to abandon their homes once again,

play02:52

as rising tides and extreme storms flood buildings and crumble infrastructure.

play02:56

Overall, 250 million people are displaced.

play03:00

Some affluent cities like New York and Shanghai attempt to adapt,

play03:04

elevating buildings and roadways.

play03:06

Ten-meter-tall seawalls line the cities’ coasts.

play03:10

Children learn about extinct sea life which once inhabited the ocean’s reefs,

play03:13

all of which have vanished thanks to rising surface water temperatures.

play03:18

Grocery prices skyrocket,

play03:20

as food and water scarcity touch all communities.

play03:23

Fruits and products long grown in the tropics and subtropics

play03:26

rarely show up on shelves,

play03:28

as intense heat waves paired with increasing humidity

play03:31

make it deadly for farmers to work outdoors.

play03:33

Unpredictable heatwaves, droughts, and floods

play03:36

cripple small-scale farmers in Africa, Asia, and South America,

play03:40

who previously produced one-third of the world’s food.

play03:43

Hundreds of millions of people are pushed into hunger and famine.

play03:47

Climate predictions can feel overwhelming and terrifying.

play03:51

Yet many of the experts responsible for these assessments remain optimistic.

play03:55

Since countries have first begun taking steps to lower their emissions,

play03:58

warming projections have shifted downwards.

play04:01

In less than a decade, we’ve reduced our projected emission rates

play04:04

so that we’re no longer on track to hit nearly 4 degrees of warming.

play04:08

Policies that invest in renewable energy sources,

play04:11

cut fossil fuel production, support electric transportation,

play04:14

protect our forests, and regulate industry

play04:17

can help mitigate the worst effects of climate change.

play04:20

But climate experts have also stressed that current policies and pledges

play04:25

don’t go far enough— in speed or scale.

play04:28

Enacting real change will require bold solutions,

play04:31

innovations, and collective action.

play04:33

There’s still time to rewrite our future, and every tenth of a degree counts.

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関連タグ
Climate ChangeGlobal WarmingEmissions PledgeFuture ProjectionsHeatwavesWildfiresEnergy CrisisDroughtsFloodingClimate MigrantsAdaptation StrategiesRenewable EnergyEnvironmental Policy
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