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How Do We Know: Hunting Hurricanes Watch Video

Videos - Extreme Weather

How Do We Know: Hunting Hurricanes

National Hurricane Center scientist Jack Beven explains the technology used to forecast and track hurricanes as they happen.

Wildfires Out West Watch Video

Videos - Extreme Weather

Wildfires Out West

In different parts of the American West, climate influences wildfires in unexpected ways.

Frank von Hippel on Nuclear Energy and Weapons Proliferation Watch Video

Videos - Climate in Context

Frank von Hippel on Nuclear Energy and Weapons Proliferation

Reactor accidents and radiation leaks aren't the only risks with nuclear energy; nuclear weapons are another problem.

M.V. Ramana on Safety at Nuclear Power Plants Watch Video

Videos - Climate in Context

M.V. Ramana on Safety at Nuclear Power Plants

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: Tracking Tornadoes Watch Video

Videos - Extreme Weather

How Do We Know: Tracking Tornadoes

How do we know when a tornado is forming? Scientist Harold Brooks explains how Doppler radars are used to track storm formation.

How Do We Know: Shrinking Arctic Sea Ice Watch Video

Videos - Climate in Context

How Do We Know: Shrinking Arctic Sea Ice

Learn how NASA scientists are tracking the melting Arctic sea ice and what less ice means for global warming in the future.

How Do We Know: Tracking CO2 Emissions Watch Video

Videos - Climate in Context

How Do We Know: Tracking CO2 Emissions

Scientist David Crisp explains how NASA tracks regional carbon dioxide (CO2) emissions from space.

How Do We Know: Thinning Sea Ice Watch Video

Videos - Climate in Context

How Do We Know: Thinning Sea Ice

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.