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Why 4.5 Billion Years of Fluctuating Global Temperatures Can't Explain Climate Change Today

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One of the most commonly used arguments against human-caused climate change is that Earth has experienced severe fluctuations in temperature over its 4.5-billion-year lifespan, so it doesn't make sense to start freaking out about it now. Β  But while Boston was once covered in almost a mile (1.6 km) of ice, and the Arctic Circle was once so warm , palm trees and crocodiles populated it instead of ice and polar bears, what's been going on over the past century is unprecedented. Not convinced? Just check out the infographic below by Randall Munroe of XKCD fame. Illustrating the rise in global temperatures from 20000 BCE right up to 2016, nothing makes it more clear just how insane things have gotten during the fraction of Earth's timeline that humans have been dominating. As you can see below, in 20000 BCE, Earth was at the peak of the last ice age ,...
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Why 4.5 Billion Years of Fluctuating Global Temperatures Can't Explain Climate Change Today

comic-climate_1024_1024
One of the most commonly used arguments against human-caused climate change is that Earth has experienced severe fluctuations in temperature over its 4.5-billion-year lifespan, so it doesn't make sense to start freaking out about it now. Β  But while Boston was once covered in almost a mile (1.6 km) of ice, and the Arctic Circle was once so warm , palm trees and crocodiles populated it instead of ice and polar bears, what's been going on over the past century is unprecedented. Not convinced? Just check out the infographic below by Randall Munroe of XKCD fame. Illustrating the rise in global temperatures from 20000 BCE right up to 2016, nothing makes it more clear just how insane things have gotten during the fraction of Earth's timeline that humans have been dominating. As you can see below, in 20000 BCE, Earth was at the peak of the last ice age ,...
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© Flipboard and it's respective article authors

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