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Duke professor and behavioral scientist Dan Ariely has been accused of using falsified data in research into ways to make people more honest. New info makes the case against him look stronger.

President Obama praised the people New Orleans for not giving up after the city was ravaged by Hurricane Katrina. The comments came at a town hall meeting during Obama's first visit to the city after being elected president.

With excessive heat advisories in effect across the U.S., here's how to avoid heat-related illnesses.

NPR's Lilly Quiroz brings us a postcard from Guatemala about Lake Atitlán, considered to be one of the most beautiful lakes in the world.

President Biden has low approval ratings on the economy even though voters like some key policies. The White House wants to narrow this gap with its "Bidenomics" slogan, but there are risks.

The United States will engage in new international negotiations to reduce greenhouse-gas emissions, according to a plan President Bush announced Thursday. The president heads to Germany next week to discuss climate change with other world leaders.

A Catholic priest and the Indian Red Cross have created what some say is a model for AIDS care in the developing world: a combination hospital and community center.

President Bush strongly defended his Iraq strategy, saying Congress has no business micromanaging the war. Even so, he was more restrained with the press during a White House news conference.

President Bush acknowledges the existence of secret CIA prisons around the world and says 14 high-value terrorism suspects have been transferred from the system to Guantanamo Bay for trials.

Nigerian poet and activist Aj Dagga Tolar lives in a shack in Ajegunle, a slum on the outskirts of Lagos that is also called "The Jungle." He says he tries to escape the tough reality of slum life by being creative, making music and poetry.