21 APR 2014 by ideonexus
Evolution of Sea Turtle Migrations
Each year around Christmas time, green turtles (Chelonia mydas) leave their shallow feeding grounds along the coast of Brazil and embark upon a 2000 km journey to their nesting grounds, the beaches of Ascension Island, in the mid-Atlantic. The journey takes a little more than 2 months in both directions, and is a miracle of navigation. Biologists have long wondered how the turtles manage the feat, and also why they bother to do it at all. Fifteen years ago two researchers, Archie Carr and Pa...Folksonomies: evolution
Folksonomies: evolution
Explained by continental drift (later discredited).
23 MAR 2012 by ideonexus
Untouched Forests as Temples
Among the scenes which are deeply impressed on my mind, none exceed in sublimity the primeval forests undefaced by the hand of man; whether those of Brazil, where the powers of Life are predominant, or those of Tierra del Fuego, where Death and Decay prevail. Both are temples filled with the varied productions of the God of Nature: no one can stand in these solitudes unmoved, and not feel that there is more in man than the mere breath of his body.Darwin remarks on the wonders filling untouched forests he explored in his voyages.