Monday, October 19, 2009

book notes

Before the Dawn

Murder by humans and chimpanzees may simply be a function of intelligence. All other animals may not understand that simply injuring an opponent means he can come back another day.

Dogs -- Dogs acting as night sentinels probably tipped the scale in getting humans to become sedentary.

Language -- Dialects were used to tell if someone was a friend or foe, as well as contributing to group solidarity.

Race -- The Comoto tribe is about 2% of Kenya's population but is half its (and the world's) champions in intermediate running. West Africans dominate sprints.

According to DNA analysis, African Americans are, on average, 17 percent Caucasian

.05% of all the men in the world carry the Y chromosome of Ganges Khan.