Namibia is a nation of over two million people in southern Africa, bordering the South Atlantic Ocean, between Angola to the north and South Africa to the south.
Ecoregions of Texas (EPA)Last Updated on 2013-03-27 at 15:18
Ecoregions denote areas of general similarity in ecosystems... More »
Everglades Province (Bailey)Last Updated on 2013-01-08 at 13:08
Southern Florida, Florida Keys, 7800 mi2 (20,200 km2)
The Everglades occupy an extensive, almost flat marl and limestone shelf generally... More »
Polar bearLast Updated on 2012-08-21 at 23:08
The Polar bear (Ursus maritimus) spends so much of its annual time at sea that the species is classified as a marine mammal; however, it is also commonly... More »
Ice ShelfLast Updated on 2012-07-27 at 08:57
An ice shelf is a thick slab of naturally occurring ice, attached to a coastline and extending out over the ocean as a seaward extension of the grounded... More »
Ice sheetLast Updated on 2012-07-27 at 08:54
An ice sheet is the contiguous assemblage of glaciers of sizeable extent; there are presently a number of well defined ice sheets, the two largest being the Antarctic Ice Sheet... More »
Aerial Exploration of the AntarcticLast Updated on 2012-07-25 at 07:59
Exploration of the Antarctic - Part 10
In the late 1920s, exploration of the Antarctic was revolutionized by the advent of aircraft.
At the turn... More »