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    • 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 »

    • 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 »

    • Flora of Napa County, California Featured Article Flora of Napa County, California Flora of Napa County, California

      Napa County is a rural county in northern California encompassing nearly 500,000 acres (200,000 hectares), about 0.5 % of the landmass of the state. It is located 25 miles (40... More »

    • Sulfur Featured Article Sulfur Sulfur

      Sulfur (alternatively spelled sulphur) is the chemical element with  atomic number 16. The chemical symbol S is used in formulae and abbreviations. Sulfur has high abundance... More »

    • Panamá Featured Article Panamá Panamá

        Panama is a nation of three-and-a-half million people, located between Costa Rica to the north and Columbia to the south. Panama connects the continental land... More »

    • 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 »

    • Serengeti Featured Article Serengeti Serengeti

      The Serengeti is a plain immediately south of the equator in eastern Africa covering over 30,000 square kilometers (12,000 square miles) east of Lake Victoria in northwestern... More »

    • Refugia Featured Article Refugia Refugia

      Refugia (singular Refugium) are geographical locations where natural environmental conditions have remained relatively constant or stable during times of great environmental... More »

    • West Nile Virus Featured Article West Nile Virus West Nile Virus

      Since 1999, more than 30,000 people in the United States have been reported as getting sick with West Nile virus. Infected mosquitoes spread West Nile virus (WNV) that can... More »

Recently Updated
Sumatran lowland rainforests Last Updated on 2013-05-24 at 00:32 The Sumatran lowland rainforests are one of the most diverse forests on Earth and also among the most threatened. These forests contain comparable levels of More »
Extraterrestrial soils Last Updated on 2013-05-23 at 18:48 Extraterrestrial soils may be defined as any of the solid granular crustal features of planets and moon other than those soils on planet Earth. Despite four decades of space... More »
New Caledonia rainforests Last Updated on 2013-05-23 at 18:36 Introduction The islands of New Caledonia contain some of the most distinctive plants in the world, with a large number of species, endemics, and an ancient character... More »
Eastern Miombo woodlands Last Updated on 2013-05-22 at 21:56 Confined to the lower elevations of the Central African Plateau, the Eastern Miombo woodland ecoregion ranges from southern Tanzania to northern Mozambique and... More »
Balsam fir Last Updated on 2013-05-22 at 21:48 This plant guide on the Balsam fir, Pinus balsamea L., was chiefly prepared and contributed by the U.S. Department of Agriculture's Natural Resources Conservation... More »
Andaman Islands rainforests Last Updated on 2013-05-22 at 21:38 Located between the Bay of Bengal and the Andaman Sea, between India to the west and Myanmar to the east, the Andaman Islands are affiliated with both countries in... More »
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