If you ask Paul Ehrlich, a professor of population studies at Stanford University, he'll tell you the new UN report on the state of the global environment is old news. Dr. Ehrlich talks with host Bruce Gellerman about overpopulation, famine, and climate change, and the urgent need for the human species to save itself from disasters of its own making.
Environmental activist and physicist Vandana Shiva talks global food politics with Living on Earth's Steve Curwood. Shiva is editor of the new book, "Manifestos on the Future of Food and Seed," which advocates local, organic and diverse food production.
More than a half a billion people in Sub-Saharan Africa don't have access to electricity. But now, a non-profit organization that has had success with its wind-up radio is using the same technology to turn on the lights. The World's Clark Boyd reports.
Mexico's Huichol people aren't on the power grid, but LED technology may bring them light. Designers and architects are distributing a textile that absorbs the sun's rays during the day and gives off light at night. The World's Jason Margolis has more.