In different parts of the American West, climate influences wildfires in unexpected ways.
Reactor accidents and radiation leaks aren't the only risks with nuclear energy; nuclear weapons are another problem.
Engineers who design nuclear plants can plan a worst case scenario, but this may not be enough to prevent all accidents.
How do we know when a tornado is forming? Scientist Harold Brooks explains how Doppler radars are used to track storm formation.
Learn how NASA scientists are tracking the melting Arctic sea ice and what less ice means for global warming in the future.
Scientist David Crisp explains how NASA tracks regional carbon dioxide (CO2) emissions from space.
NASA scientist Ron Kwok details new technology he is using to monitor how extensively Arctic sea ice is melting from below, a key indicator of the ice's long-term stability.
NASA scientist Michael Watkins explains how satellites are used to monitor our changing global groundwater supplies.