Dr. Heidi Cullen talks to Dr. John Townshend about his current research which tracks rainforest deforestation.
The atmosphere isn't the only place carbon dioxide caused by human activity goes.
A warming planet could mean that sea levels rise three or more feet by the end of this century.
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.
Climate change is turning a lot of Greenland's ice to water. But, how do we know?