"The sun. I have people tell me, ‘carbon dioxide warms the Earth.’ No, it doesn't. The sun warms the Earth." We remember graphic textbooks – carbon paper inside! – and goggles in fifth grade.

Graphic showing the contribution of different greenhouse gases to warming influence on the earth from 1750 to 2021. Carbon dioxide contributes ... After being warmed by the sun, the earth emits ...

And yet ideas for geoengineering – literally engineering ways to either lower carbon dioxide levels ... some of the sun's energy back to space, artificially cooling the Earth.

Climate 101 is a Mashable series that answers provoking and salient questions about Earth’s warming climate. The last time CO2 levels were as high as today, ocean waters drowned the lands where ...