Climate 101: Ozone Depletion

Climate 101: Ozone Depletion

3:25 | Learn what CFCs are, how they have contributed to the ozone hole, and how the 1989 Montreal Protocol sought to put an end to ozone depletion.

Our Rising Seas

Our Rising Seas

31:39 | The present sea level rise is due to human-produced climate change. That accelerating rise is unevenly distributed around the globe, with certain areas much more vulnerable than others.

Keystone XL: Why Pipelines Spark Controversy

Keystone XL: Why Pipelines Spark Controversy

4:53 | Why oil and gas pipelines like the Keystone XL expansion and the Dakota Access Pipeline are so contentious – and how building new pipelines will lock us into a system reliant on fossil fuels for decades to come.

The Last Time the Globe Warmed

The Last Time the Globe Warmed

10:53 | Imagine an enormous, lush rainforest teeming with life…in the Arctic. Well there was a time — and not too long ago — when the world warmed more than any human has ever seen. (So far)

The Nuclear Waste Problem

The Nuclear Waste Problem

11:08 | Used fuel rods will remain radioactive enough to emit a lethal dose for tens or hundreds of thousands of years past their removal. What do you do with them?

Future global warming

Future global warming

2:41 | IPCC report authors rigorously evaluate the latest results from climate models run on supercomputers.