Browse Archive

  • A cloud of pollution hangs over the Eastern United States in this image captured in July 2002 by NASA's MODIS instrument.

    Local Sources Major Cause of U.S. Near-Ground Aerosol Pollution

    Most of the pollution found here in the U.S. is from local sources, and only a small portion is brought here from other countries.

  • Landsat image after Katrina thumbnail

    Hurricane Katrina's Impact on Forests

    Hurricane Katrina damaged 320 million large trees which led to massive quantities of carbon dioxide being released into the atmosphere.

  • Scientists used measurements from Arctic Bottom Pressure Recorders

    NASA Sees Arctic Ocean Circulation Do an About-Face

    A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales.

  • artist’s rendition of Rosetta's closest approach to Earth

    Rosetta Swings Past Earth  →

    The Rosetta spacecraft zoomed past Earth at 12:57 p.m. Pacific Time today, picking up speed for its planned 2014 rendezvous with a comet. JPL manages NASA's contribution to the European Space Agency's 3.3-ton comet chaser.

  • La Niña Persists

    La Niña Persists

    The tropical Pacific Ocean remains in the grips of a cool La Niña, as shown by new data of sea-level heights from mid-October of 2007, collected by the U.S-French Jason altimetric satellite.

  • Hurricane Season 2007: Tropical Storm 05A (Arabian Sea)

    The rare tropical depression called "05A" in the Arabian Sea was hanging near the southern coast of Oman on Nov. 1 and 2, but forecasters expect it to fade over northeast Yemen over the weekend.

  • two views of Hurricane Ileana

    Improving Estimates of a Hurricane's Punch

    As Tropical Storm Noel churns off Florida's east coast, NASA and university scientists have announced they have developed a promising new technique for estimating the intensity of tropical cyclones from space.

  • With its thermal-infared sensor pod under its left wing, NASA's Ikhana unmanned aircraft cruises over California during the Western States Fire Mission.

    NASA Airplane Joins California Fire Battle

    A high-tech NASA research airplane is helping firefighters in Southern California get better up-to-the-minute information about the status of the blazes they face.

  • Thumbnail of wildfires in Southern California

    California Wildfires

    Powerful Santa Ana winds have fueled more than 10 large wildfires throughout Southern California, stretching from Santa Barbara to San Diego.

  • Ozone hole image from September 13, 2007

    NASA Data Reveals 'Average' Ozone Hole in 2007

    NASA data reveal the extent of the hole in 2007 was about average when compared to measurements from the last few decades.