The killing of four white students at Kent State University in 1970 left an indelible stain on the national consciousness, but most Americans know nothing of the three black students killed at South Carolina State College in Orangeburg two years ear...
Ethnobotanist Mark Plotkin's quest to preserve the ancient wisdom of Amazonian shamans. For more than twenty years Dr. Mark Plotkin has searched the Amazon for plants that heal. He is an ethnobotanist, a scientist who studies the relationship betwee...
In a single recent year the U.S. classified about five times the number of pages added to the Library of Congress. We live in a world where the production of secret knowledge dwarfs the production of open knowledge. Depending on whom you ask, govern...
In a single recent year the U.S. classified about five times the number of pages added to the Library of Congress. We live in a world where the production of secret knowledge dwarfs the production of open knowledge. Depending on whom you ask, govern...