Much Of Human History Has Consisted Of

History Followed Different Courses For Different Peoples Because Of Differences Among Peoples' Environments, Not Because Of Biological Differences Among Peoples Themselves

The Anasazi Did Manage To Construct In Stone The Largest And Tallest Buildings Erected In North America Until The Chicago Steel Girder Skyscrapers Of The 1880s.

All Of Our Current Environmental Problems Are Unanticipated Harmful Consequences Of Our Existing Technology. There Is No Basis For Believing That Technology Will Miraculously Stop Causing New And Unanticipated Problems While It Is Solving The Problems That It Previously Produced.

Some People Have Much More Pull Than Other People. But When I Say That The Public Has Ultimate Responsibility, I'm Not Saying It In A Moral Sense. I'm Just Saying It In The Sense Of What Is It That's Really Going To Bring Change.

Measles And Tb Evolved From Diseases Of Our Cattle, Influenza From A Disease Of Pigs, And Smallpox Possibly From A Disease Of Camels. The Americas Had Very Few Native Domesticated Animal Species From Which Humans Could Acquire Such Diseases.