"Even in the intensely cold, windy, and dry environment of Antarctica, a wide variety of wildlife--from the massive swarms of krill in the Southern Ocean to the throngs of penguins on its icy shores-- finds ways to thrive. Some species of Antarctic fishes make a natural antifreeze that prevents their blood from freezing solid, and although no trees grow on Antarctica, a forest of giant seaweed flourishes under the sea. Antarctica's creatures are exquisitely...