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Expert-reviewed information about the Earth.  For everyone.

    • Dudleya cymosa (Lem.) Britt. & Rose Featured Article Dudleya cymosa (Lem.) Britt. & Rose Dudleya cymosa (Lem.) Britt. & Rose

      Dudleya cymosa (Lem.) Britt. & Rose is a perennial low-growing succulent plant species that is endemic to California. Having a number of subspecies, this fleshy plant is... 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 »

    • Herbivore Featured Article Herbivore Herbivore

      Introduction A herbivore is an animal that obtains its energy and nutrients by feeding on plants.  Different types of herbivores eat different plant parts.  For... More »

    • Petrochemicals Featured Article Petrochemicals Petrochemicals

      Petrochemicals are chemical products made from the hydrocarbons present in raw natural gas and petroleum crude oil. The largest petrochemical manufacturing industries are to... 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 »

    • 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 »

    • Nuclear power Featured Article Nuclear power Nuclear power

      Nuclear power is the generation of electricity from controlled reactions within the nucleii of atoms that release energy used to boil water, the steam from which drives a... 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
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 »
Fair Trade for Agriculture in Ethiopia Last Updated on 2013-05-22 at 21:13 Brief Introduction of Fair Trade While no officially accepted definition exists, fair trade is widely recognized as a certification to represent a good that was produced... More »
Cuban moist forests Last Updated on 2013-05-22 at 20:46 The Cuban moist forests originally held exceptionally distinctive insular flora and fauna, with many species, genera and families unique to its forests in the form of relict... More »
Valdivian temperate forests Last Updated on 2013-05-22 at 01:13 The Valdivian temperate forests and the more hygrophilous vegetation of the Mediterranean area of central Chile, represent a true biogeographic island separated from... More »
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