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Scientists have developed vaccines that protect against the deadly Ebola and Marburg viruses. They hope to test the vaccines -- successful in experiments with monkeys -- on humans in two to three years. The viruses are at the top of experts' list of bioterrorism threats.

One brigade slated for deployment to Iraq this summer will instead be staying in Germany, courtesy of the Pentagon's reassessment of troop levels. Will political progress in Baghdad allow the Defense Department to lower U.S. force levels in the weeks ahead?

There's an unusual bi-partisan effort to get the Environmental Protection Agency (EPA) to release information about certain Superfund cleanup sites, pieces of land that have been deemed too toxic for development. The EPA says sharing some information about the sites could discourage companies from cleaning up their environmental messes.

Billions of people rely on glaciers for drinking water, hydropower and irrigation. A raft of new research suggests there is less ice left than previously thought.

There's a revolution underway in Venezuela — not on the streets, where uprisings have failed, but in the halls of Congress. For the first time in nearly two decades, the opposition is in charge.

Americans paid an estimated $1 billion in interest on medical debt in just three years, a federal agency finds. This includes use of credit cards often pitched in doctors' and dentists' offices.

The CEO of OpenAI, the company behind ChatGPT, went before a Senate subcommittee Tuesday and called for regulation of artificial intelligence.

The public ferry system is a key link for a diverse nation spanning some 17,000 islands. "We serve all the people," says the captain of a ferry linking majority-Hindu Bali with majority-Muslim Lombok.

Scott Simon discusses the significance of the Nevada caucuses and the Republican primary in South Carolina with Senior Washington Editor Ron Elving.

President Bush, wrapping up a visit to the Middle East to promote peace in the region, got a boost Wednesday on his last stop in Egypt. Top Arab ally President Hosni Mubarak said he would work closely with the U.S. on a deal to create a Palestinian state.