December 6, 2012, 2pm PST
This week, scientists unveiled unprecedented images of the Earth at night, as captured by a new NASA and National Oceanic and Atmospheric Administration (NOAA) satellite.
September 19, 2006, 8am PDT
Research shows that New York City's heat island could be mitigated by increased vegetation and green roofs.
September 5, 2005, 7am PDT
NASA offers simulated views of the effects of storm surge flooding on Lake Pontchartrain and the New Orleans area.