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The Texas senator won all of Colorado's available delegates, thanks in large part to an organized campaign strategy that could give Trump a real fight for the nomination.

Rwanda is missing 15 years of weather data. Getting it back would be a boon for farmers. But can it be done?

Just before President Obama's visit to Ethiopia last year, jailed bloggers and journalists were suddenly released from prison — a welcome gesture of openness. But their freedom goes only so far.

Whoever ends up running his estate will face some tough decisions about how to handle his musical legacy. What happens to the music in his vault? Will future concertgoers see him as a hologram?

Notes, bills and contracts dating to as early as A.D. 43 were discovered during work on a new building in London. The wooden tablets mention debts, legal disputes and one Tertius the Brewer.

Boxing gyms around the country are remembering the champion, who died Friday. NPR's Nathan Rott talked to boxers in Los Angeles who said Ali inspired them.

In the developing world, where many people lack bank accounts or credit cards, banks may hesitate to loan them money. But researchers say cellphones can help determine people's creditworthiness.

What's the secret to long-lasting milk? A complex system of refrigeration called the cold chain. But in some parts of developing countries, the chain doesn't exist, leaving a lot of milk to spoil.

The storm marked a turning point for the school. Now, instead of focusing on historic preservation, it encourages students to design spaces with and for New Orleans' low-income neighborhoods.

Water samples taken after the spill showed lead concentrations that were 3,500 times the levels normally seen in Durango, Colo.