Videos Section

How Do We Know: Ocean Acidification Watch Video

How Do We Know: Ocean Acidification

The atmosphere isn’t the only place carbon dioxide caused by human activity goes.

How Do We Know: Sea Level Rise Watch Video

How Do We Know: Sea Level Rise

A warming planet could mean that sea levels rise three or more feet by the end of this century.

How Do We Know: Drought Watch Video

How Do We Know: Drought

How do we know when a region may be experiencing an early drought? Dr. Heidi Cullen talks to NASA scientist Molly Brown, who relies on sophisticated satellites for the answer.

How Do We Know: Greenland’s Melting Ice Sheet Watch Video

How Do We Know: Greenland’s Melting Ice Sheet

Climate change is turning a lot of Greenland's ice to water. But, how do we know?