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For people who love coffee, it's more than just a drink. The morning cup is part ritual, part pick-me-up. But what most people don't know is that a small amount of caffeine can give many people the lift they want, without producing jitters.

After visiting Nyarugusu refugee camp in Tanzania, two trainees in medicine and public health at Johns Hopkins reflect on disparities in the quality of medical and surgical care provided to refugees.

Elon Musk addressed Twitter employees for the first time since striking a deal to buy the social network for $44 billion. He did not say whether he was having second thoughts.

The social media company is asking a Delaware court to force the world's richest man to follow through on his agreement to buy it for $44 billion.

President Biden is urging voters to elect representatives who support abortion rights in November's election. But it's doubtful the issue will shift the balance of power in Congress.

Millions of Russian adults and children play soccer on various levels. In one small town, three generations of soccer players take on the meaning of the game and the World Cup.

Many people in Turkey are growing increasingly weary of hosting the millions of Syrian refugees that have been there for years — but the Syrians have no place to go.

NASA's $10 billion new telescope showed the world something remarkable today: an image of some of the first galaxies to form in the universe.

Many Americans put down deposits of $20,000 or more with builders to put up new homes. But with mortgage rates rising, some can no longer afford the homes. And they could lose their deposits.

Dehydration has long been known to slow physical performance. Now there's evidence that too little water can hurt cognitive performance, too, making complex thinking tasks harder.