Kind: captions Language: en welcome aboard helicopter flight plx headed to the west coast of greenland if you could actually look at the molecules in the air down below you'd see carbon dioxide concentrations averaging about four hundred and twelve parts per million that is out of every million molecules of air four hundred and twelve of them are co2 and that's more than the planet seen in the last three million years so where's all that extra carbon dioxide coming from mainly all the carbon-based fuels we humans burn for example think about all the roads and cars you see every day in every gallon of gasoline there's about five pounds of carbon now what does that look like well imagine that carbon came out of a car's tailpipe not as invisible carbon dioxide gas but as solid chunks of carbon if you add up all the world's cars they produce three million tons of carbon every day and that's just cars when we add in power plants factories agriculture and aviation including helicopters like this one the total carbon released from human activities in a year is twelve and a half billion tons enough to leave a pile of carbon for miles across and over a mile high this is why scientists say we've uh shirred in a new geologic age called the Anthropocene with humans now altering Earth's climate but what exactly will all this co2 actually do to our planet here in Greenland you can see one of the impacts firsthand now make sure you buckle your seatbelt because we're about to land alongside the Yak absolvent glacier you