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Since the Industrial Revolution, humans have released
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over 1.5 trillion tons of carbon dioxide or CO₂, into the Earth's atmosphere.
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In the year 2019, we were still pumping out around 37 billion more.
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That's 50 percent more than the year 2000 and almost three times as much as 50 years ago.
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And it's not just CO₂,
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we're also pumping out growing volumes of other greenhouse gases such as methane and nitrous oxide.
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Combining all of our greenhouse gases, we're emitting 51 billion tons of carbon dioxide equivalents each year.
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And emissions keep rising.
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But they need to get down to zero.
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In recent years, the consequences have become more serious and visible.
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Almost every year breaks some horrible record:
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We've had more heat waves, the most glaciers melting, and the lowest amount of ice ever recorded at the North Pole.
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Of the last 22 years, 20 have been the hottest on record.
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The only way to limit this rapid climate change is to decrease our collective emissions quickly.
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But although all countries agree on this goal in principle,
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they do not agree who is responsible or who should bear the heaviest load.
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The developed countries point at their own efforts to reduce emissions
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and the fact that the large developing countries on the rise, especially China,
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are currently releasing much more CO₂.
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On the other hand, developing countries argue that emissions by the West are lifestyle emissions,
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while for developing countries, they are survival emissions.
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Others call rich countries hypocrites that got rich by polluting without restraint
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and now expect others not to industrialize and stay poor.
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So who is responsible for climate change and CO₂ emissions?
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And regardless of the past, who needs to do the most today?
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In this video, we'll talk exclusively about nation-states.
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We'll look at the fossil fuel industry in another video.
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Question 1 of 3: Which countries emit the most carbon dioxide today?
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In 2017, humans emitted about 36 billion tons of CO₂.
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More than 50% came from Asia. North America and Europe followed with 18% and 17%.
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While Africa, South America, and Oceania together only contributed eight percent.
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China is by far the world's largest emitter with 10 billion tons of CO₂ every year,
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or 27% of global emissions.
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It's followed by the USA with 15% and the European Union with around 10%.
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Together, this is more than half of the world's CO₂ emissions.
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So it's clear that without the willingness and action of these three industrial blocs,
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humanity will not be able to become carbon neutral and prevent severe climate change.
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Next on our list is India at seven percent, Russia at five percent, Japan at three percent,
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and Iran, Saudi Arabia, South Korea, and Canada all just short of two percent.
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Together with the first three, the top 10 are responsible for 75% of global emissions.
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But if we only look at the current situation, we're not getting the full picture.
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Question 2 of 3: Which countries have emitted the most in total?
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If we look at emissions throughout history until today, the outlook changes drastically.
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The US and the EU both knock China off the top spot.
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The US is responsible for 25% of the world's historical emissions emitting 400 billion tons,
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mostly in the 20ᵗʰ century.
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In second place is the EU at 22%.
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China comes in third at just under 13 percent, around half of the USA's contribution.
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India's contribution shrinks to 3 percent along with the whole of Africa and South America.
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The UK is responsible for one percent of annual global emissions
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but takes five percent of the historical responsibility.
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Germany, producing two percent of emissions per year today, has contributed almost six percent,
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as much as the whole of Africa and South America combined.
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So the narrative that rapid climate change is really the responsibility of the developing world
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is hard to defend if facts matter to you.
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But this is still not the whole story, because focusing on countries mixes two things:
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population numbers and total emissions.
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If a country has more people in general, its emissions are of course higher.
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Things look very different if we look at individuals like you, dear viewer.
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Question 3 of 3: Which countries emit the most carbon dioxide per person?
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The average human is responsible for around five tons of CO₂ each year, but averages can be misleading.
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The countries with the largest CO₂ emissions per person are some of the world's major oil and gas producers.
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In 2017, Qatar had the highest emissions at a hefty 49 tons per person,
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followed by Trinidad and Tobago, Kuwait, the United Arab Emirates, Brunei, Bahrain, and Saudi Arabia.
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But those are outliers.
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Australians have one of the highest carbon footprints per person: 17 tons a year.
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That's more than triple the global average
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and slightly more than the average US American and Canadian at 16 tons.
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The Germans do a little better at close to 10 tons, but this is still twice the global average.
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China may be the world's largest emitter,
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but it's also the world's most populous country with over 1.4 billion people,
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18.5% of the world population.
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Per person, it's above average at seven tons.
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Historically, CO₂ emissions have been closely tied to a high standard of living.
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Wealth is one of the strongest indicators of our carbon footprint, because as we move from poor to rich,
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we gain access to electricity, heating, air conditioning, lighting, modern cooking,
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cars or planes, smartphones, computers, and interact with people across the world online.
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The enormous rise of China's CO₂ emissions is coupled with the greatest reduction of poverty in history.
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If we order CO₂ emissions by income,
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we see that the richest half of countries are responsible for 86% of global emissions
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and the bottom half for only 14%.
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The average German emits more than five times as much as the average Indian.
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In just 2.3 days, the average American emits as much as the average Nigerian in a year.
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And not only that, the harsh reality is that
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it's the countries that contribute least to the problem that stand to lose the most from rapid climate change.
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The developing world will be hit the hardest.
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The consequences could be food insecurity, conflicts over resources,
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harsher and more frequent natural disasters, and large climate refugee movements.
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Question 4... of 3: So who should take responsibility?
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Many of today's richest countries are in a convenient position.
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They have become rich over centuries of fossil fuel burning and industrial production.
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They have a large historical footprint, and their wealth means they still emit a lot per person.
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But their country's annual emissions are now dwarfed by other countries,
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because the giant that is China is finally catching up, and other giants like India are on their way.
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Many Germans, for example, wonder how if Germany only accounts for two percent of yearly emissions,
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it can have a meaningful impact on reducing emissions.
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The answer is simple.
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For one, the richest countries have the resources, highly educated workforces, and technology
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to develop low-cost, low-carbon solutions and spread them around the world.
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If we don't want poorer countries to become as fossil fuel-dependent as we are,
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we need low-carbon technology to be cheap and available.
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And we're getting there.
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The cost of renewables is falling quickly and a variety of solutions are on the horizon for many different sectors.
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But it needs to happen much faster.
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If the rich countries of the West decide to seriously tackle rapid climate change,
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the rest of the world would follow, because it has no choice.
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Just like when the European Union enforced energy efficiency standards for technology,
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the rest of the world adopted them too, because they wanted to be able to continue trading with the block.
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Still, this doesn't absolve others of their responsibility.
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China is the largest CO₂ emitter today, and it's China's responsibility to grow in a way
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that will make it possible to transition to a zero-carbon world in time.
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Others acting irresponsibly yesterday is a horrible excuse for repeating the same mistakes today.
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Climate change is a global problem, and no country alone can fix it.
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Working out who's responsible is not as simple as it seems, and in a way, it's a daft question,
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but one that has plagued international politics for decades.
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In the end, it's pretty simple.
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Everybody needs to do the best they can, and right now we are all not doing that.
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But we can begin today.
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This video is part of a series about climate change supported by Breakthrough Energy,
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a coalition founded by Bill Gates that's working to expand clean energy investment
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and support the innovations that will lead the world to net zero carbon emissions.
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Also, a special thanks to the team at Our World in Data for helping us out with data and research.
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[Calm outro music]12993
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