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
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: Hurricane Hunting
National Hurricane Center scientist Jack Beven explains the technology used to forecast and track potential hurricanes as they happen.
How Do We Know: Tracking C02 Emissions
Scientist David Crisp explains how NASA tracks regional carbon dioxide (CO2) emissions from space.
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.
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
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
Dr. Heidi Cullen talks to Dr. John Townshend about his current research which tracks rainforest deforestation.
