is a South African human rights and anti-apartheid activist, former archbishop, and winner of the Nobel Peace Prize.

Diana Divecha, Ph.D. is a Berkeley-based developmental psychologist who consults, writes, and speaks about the science of how children, teens and families grow and develop.

is a Senior Faculty in the Education Department and Director of the Center for Place-based Education at Antioch University New England. His writings examine the relationship between child development, authentic

is a Professor Emeritus in the Department of Environmental Studies at Oberlin College, and founder of The Oberlin Project. He is the author of numerous books on the environment, most

is the senior economist and co-founder of the Center for Economic Policy Research. He is the author of several books, as well as the economic reporting blog Beat The Press.