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The world could lose all its coral reefs within the next century. As the Earth heats up, warming ocean waters could be deadly to these fragile ecosystems. On the Caribbean island of Bonaire, scientists are trying to figure out how to help coral reefs become more resilient.

We'll hear a front-line assessment of America’s entanglement in Afghanistan from journalist and author, Rajiv Chandrasekaran.

What are San Diego scientists doing to find cures for some of the world's rarest diseases? We speak to KPBS Reporter Tom Fudge about the local efforts taking place at the Sanford Burnham Institute to find treatments and cures for "orphan" diseases.

At the Guantanamo Bay prison camp, there is little outward indication of the turmoil swirling around Washington about its future. But guards say detainees keep asking whether the camp is going to close — a goal President Obama is facing growing opposition on.

The vast, icy expanse of the South Pole has nurtured its own community. But what kind of people come for months at a time to live at the most difficult place on Earth?

Members of the U.N. Security Council are in Sudan's Darfur region Thursday for a first-hand look at the conflict there. Five years of fighting have killed hundreds of thousands of people and displaced millions.

Lt. Gen. Roméo Dallaire witnessed the killing and chaos of the Hutu/Tutsi conflict in Rwanda. Scott Simon talks to Dallaire about his experience, which is chronicled in his book Shake Hands with the Devil: The Failure of Humanity in Rwanda.

A woman living in Madagascar forgoes the typical expat car — the Land Cruiser — in favor of an unreliable, little Orange Kely. The rickety vehicle offers street cred, she finds, but as the honeymoon bliss wears off, she starts to see that her "hard-core" move may simply be a pointless act of condescension.

Forty percent of the world's oil exports travel on tanker ships from the Persian Gulf, through the narrow Strait of Hormuz. Until recently, a small Omani village on its banks appeared to have been forgotten by the modern world.

Efforts are under way to stabilize much of the Democratic Republic of Congo ahead of April national elections. An army push against militias in the southeast has driven tens of thousands of civilians from their homes. Aid workers must combat malnutrition and disease.