For some who use in vitro fertilization to have a baby, more embryos are created than used -- leading to thousands in storage. Complicated legal, moral and personal questions over what to do with unused embryos.
William Kamkwamba describes dreaming of bringing light to his village in Africa and how he taught himself physics and used spare parts to build a windmill that produced electricity.
- William Kamkwamba a student at the Pan-African Leadership Academy in South Africa and a 2007 TED Global Fellow.
- Bryan Mealer author of "All Things Must Fight to Live" and a former Associated Press correspondent in the Democratic Republic of Congo.
Most Recent Shows
Puerto Rico's governor says the U.S. territory cannot pay its billions in debt. Like Greece, it faces a long road to stability. A look at the fundamental economic problems in Puerto Rico and Greece, and how they could affect economies in the U.S. and across the world.
Another reason to eat your fruits and vegetables: Recent research shows that small doses of the toxins naturally found in plants can boost our immune systems, protect against brain disease and help us live longer. We look at the toxins in plants and other anti-aging insights.
Many Americans are celebrating the Supreme Court’s landmark decision affirming the right of same-sex couples to marry. We dive into the court's decision, the dissents, how critics are reacting and what it means for the country.