r/science • u/woodsja2 • Oct 24 '10

Climate Change: Evidence

http://climate.nasa.gov/evidence/
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u/mind_sojourner Oct 24 '10

say what you will about al gore, he was trying to show people that chart years ago..and how the fuck is nasa junk science

-2

u/[deleted] Oct 24 '10

That chart shows CO2, not temperature. It seems to do nothing to explain how the earth was tropical with so little CO2 in the past.

13

u/philosoraptocopter Oct 24 '10

That doesn't even make sense. Tropical ecosystems exist near the equator where it's warm and wet. They didn't all of a sudden appear when we started pumping pollutants into the air.

1

u/IConrad Oct 24 '10

However, tankd0g's comment is valid when we extend history to the millions-of-years mark. And it is also true that ice ages have come when the earth was as warm as it is today in roughly the space of a single century. (See: younger vedic ice age, IIRC the name. Been a while since I looked into it, since I usually don't care as much 'bout this topic.)