Learn More About Climate Change

The evidence for rapid climate change is compelling: Just ask NASA.

  • Sea level rise

    The global sea level rose about 17 centimeters (6.7 inches) in the last century. The rate in the last decade, however, is nearly double that of the last century.

  • Global Temperature Rise

    All three major global surface temperature reconstructions show that Earth has warmed since 1880. Most of this warming has occured since the 1970s, with the 20 warmest years having occurred since 1981, and with all 10 of the warmest years occurring in the past 12 years. Even though the 2000s witnessed a solar output decline resulting in an unusually deep solar minimum in 2007 - 2009, surface temperatures continue to increase.

  • Warming Oceans

    The oceans have absorbed much of this increased heat, with the top 700 meters (about 2,300 feet) of ocean showing warming of 0.302 degrees Fahrenheit since 1969.

  • Shrinking Ice Sheets

    The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost about 150 to 250 cubic kilometers (36 to 60 cubic miles) of ice per year between 2002 and 2006, while Antarctica lost about 152 cubic kilometers (36 cubic miles) of ice between 2002 and 2005.

  • Declining Arctic Sea Ice

    Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades.

  • Glacial Retreat

    Glaciers are retreating almost everywhere around the world — including the Alps, Himalayas, Andes, Rockies, Alaska, and Africa.

  • Extreme Events

    The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S has also witnessed increasing numbers of intense rainfall events.

  • Ocean Accidification

    The carbon dioxide content of the Earth's oceans has been increasing since 1750, and is currently increasing about 2 billion tons per year. This has increased ocean acidity by about 30 percent.

Important Links

EPA Climate Change Website
www.epa.gov/climatechange ^

NASA Climate Change Website
climate.nasa.gov ^

National Science Foundation
March 4, 2010 Press Release, explains that methane releases from East Siberian Arctic Shelf could trigger abrupt climate warming... Read More ^

National Snow and Ice Data Center
Director states Arctic Ice is in a death spiral ^ - Sept. 20, 2010