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    • DNA Featured Article DNA DNA

      Deoxyribonucleic acid (DNA) is a long chain organic molecule that contains the coding for all metabolic and reproductive processes of all living organisms, save for certain... More »

    • The critically endangered dusky gopher frog,... Featured Article The critically endangered dusky gopher frog,... The critically endangered dusky gopher frog,...

      Amphibian species worldwide are in rapid decline. One of the most common reasons for this decline is the spread of the chytrid fungus. The dusky gopher frog Lithobates sevosus...

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    • Earth's atmosphere Featured Article Earth's atmosphere Earth's atmosphere

      The Earth's atmosphere is an envelope of gas that surrounds the Earth and extends from the Earth's surface out thousands of kilometres, becoming increasingly thinner (less dense)... More »

    • Measuring personal environmental exposures Featured Article Measuring personal environmental exposures Measuring personal environmental exposures

      Increasingly, tools and methodologies have begun to emerge that hold promise for capturing information about at least some of the environmental exposures that an individual may...

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    • Iran Featured Article Iran Iran

      Iran is a nation of over 78 million people in the Middle East, bordering the Gulf of Oman, the Persian Gulf, and the Caspian Sea, between Iraq and Pakistan Its major... More »

    • Greece Featured Article Greece Greece

      Greece is a nation of ten-and-three-quarters million people is southern Europe, bordering the Aegean Sea, Ionian Sea, and the Mediterranean Sea, between Albania and Turkey. A... More »

    • Bathymetric Data Viewer Featured Resource Bathymetric Data Viewer Bathymetric Data Viewer

      NOAA has made sea floor maps and other data on the world’s coasts, continental shelves, and deep ocean available for easy viewing online through its Bathymetric Data... More »

    • European otter Featured Article European otter European otter

      The European otter (Lutra lutra) is a broadly distributed marine mammal found in both marine and freshwater systems over considerable portions of Europe, Asia and North Africa;... More »

Recently Updated
Greenland Last Updated on 2012-05-21 at 21:34 Greenland, the world's largest island, is  between the Arctic Ocean and the North Atlantic Ocean, northeast of Canada. It is a self-governing overseas administrative... More »
Mangrove Last Updated on 2012-05-21 at 19:32 A Mangrove plant association is a type of specialized coastal wetland found in tropical and subtropical regions. This ecological community is characterized by... More »
Protozoa Last Updated on 2012-05-21 at 19:17 Introduction     The taxonomic kingdom Protista is a collection of single celled organisms that do not fit into any other category.... More »
Greece Last Updated on 2012-05-21 at 18:50 Greece is a nation of ten-and-three-quarters million people is southern Europe, bordering the Aegean Sea, Ionian Sea, and the Mediterranean Sea, between Albania and Turkey. A... More »
Gibraltar Last Updated on 2012-05-21 at 18:15 Gibraltar is a small overseas territory of the United Kingdom with slightly under 30,000 people strategically located on Strait of Gibraltar that links the North Atlantic Ocean... More »
Ghana Last Updated on 2012-05-21 at 18:09 Ghana is a nation of twenty-five million people in western-Africa, bordering the Gulf of Guinea, between Cote d'Ivoire to the west and Togo to the east. Within Ghana is... More »
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