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Early humans were social and initially scavenged, before becoming active hunters. The need to communicate and hunt prey efficiently in a new, fluctuating environment (where the locations of resources need to be memorized and told) may have driven the expansion of the brain from 2 to 0.8 Ma. Evolution of dark skin at about 1.2 Ma. [39]
The Reptile Book, discussed above, was released in 1907 to great success; it was republished and expanded several times. With Reptiles of the World in 1910 (edited and expanded in 1933), Snakes of the World in 1931, Reptiles of North America in 1936 and Field Book of North American Snakes in
More than 99 percent of all species that ever lived (over five billion) [1] are estimated to be extinct. [2] [3] Estimates on the number of Earth's current species range from 10 million to 14 million, [4] with about 1.2 million or 14% documented, the rest not yet described. [5]
The first debates about the nature of human evolution arose between Thomas Henry Huxley and Richard Owen. Huxley argued for human evolution from apes by illustrating many of the similarities and differences between humans and other apes, and did so particularly in his 1863 book Evidence as to Man's Place in Nature.
This was a new social phenomenon and marked a major cultural shift in how nations commemorated conflicts. Interest in World War I and its memorials faded after World War II, and did not increase again until the 1980s and 1990s, which saw the renovation of many existing memorials and the opening of new sites. Visitor numbers at many memorials ...
Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers.They migrated out of Africa during the Last Ice Age and had populated most of the Earth by the end of the Ice Age 12,000 years ago.
The type species is M. bucklandii, named in 1827 by Gideon Mantell, after Buckland. [1] In 1842, Megalosaurus was one of three genera on which Richard Owen based his Dinosauria. On Owen's directions a model was made as one of the Crystal Palace Dinosaurs, which greatly increased the public interest for prehistoric reptiles. Over 50 other ...
Before World War II, the events of 1914–1918 were generally known as the Great War or simply the World War. [1] In August 1914, the magazine The Independent wrote "This is the Great War. It names itself". [2] In October 1914, the Canadian magazine Maclean's similarly wrote, "Some wars name themselves. This is the Great War."