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Coffee beans are filled with oils that emerge from coffee grounds under high pressure. These oils form the crema - "the frothy stuff" on top of an espresso. In the last installment of Science Friday's series on coffee, food-science writer Harold McGee, author of On Food and Cooking, explains the chemistry of crema.

Sweeping tax cuts, for businesses and individuals, will be at or near the top of the list for both the White House and the Republican-controlled Congress. A tax on imports may also be on the table.

Indonesia's founding philosophy includes the notions of unity and social justice for all. But there are growing concerns that the country is becoming less tolerant than it once was.

The job of guiding climbers up the Himalayas has brought money and development to their communities, but little glory for the Sherpas.

Guilty or innocent, the drug-corruption trial in New York of high-ranking former Mexican government official, Genaro Garcia Luna, shows the limits of the U.S. to win its decades-long "war on drugs."

The federal government has sued Amazon for allegedly using its monopoly power to stamp out rivals. Now, some small businesses that sell on the marketplace reveal what it's like to depend on Amazon.

A region that was the scene of major combat a year ago has been quiet for the past two months, Marines say — thanks in part to a group of local Afghans who act as a sort of an armed neighborhood watch. They identify Taliban fighters and have found caches of IEDs.

A region that was the scene of major combat a year ago has been quiet for the past two months, Marines say — thanks in part to a group of local Afghans who act as a sort of an armed neighborhood watch. They identify Taliban fighters and have found caches of IEDs.

South Korea's restaurants are fine-tuning traditional dishes and adding the taste of culinary success to the trophy chest of Korean cultural power.

Rep. Robert Garcia is the new top Democrat on the House Oversight Committee. At a moment when his party is craving more confrontation with President Trump, he says he's ready to lean into the fray.