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How Do We Know: Groundwater Watch Video

Videos - Climate in Context

How Do We Know: Groundwater

NASA scientist Michael Watkins explains how satellites are used to monitor our changing global groundwater supplies.

How Do We Know: Salty Seas Watch Video

Videos - Climate in Context

How Do We Know: Salty Seas

Ocean salinity can have a big impact when it comes to changing climate. Learn how scientists are monitoring our salty seas.

How Do We Know: Proof in the Pixels Watch Video

Videos - Climate in Context

How Do We Know: Proof in the Pixels

Dr. Heidi Cullen talks to Dr. John Townshend about his current research which tracks rainforest deforestation.

How Do We Know: Ocean Acidification Watch Video

Videos - Climate in Context

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

Videos - Climate in Context

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

Videos - Extreme Weather

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

Videos - Climate in Context

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?

Adapting Miami to Climate Change Watch Video

Videos - States of Change

Adapting Miami to Climate Change

Some in Florida who lived through Katrina now are preparing for climate change-related disasters they fear could be more damaging than a hurricane.