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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.

As Americans think about recession, a pandemic, racial justice, climate change and policing, many Trump voters (or potential Trump voters) bring up abortion in explaining their voting rationale.

Texas Republican Rep. John Ratcliffe assured the Senate Intelligence Committee that, if confirmed, he would not apply a partisan filter to reporting or shade conclusions to please the president.

Pete Buttigieg may face scrutiny after popping in the polls. Elizabeth Warren provided answers about her health care plan, and now she'll have to defend them. And is the field finally set?

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

For the second time, the University of Texas must defend its limited use of race and ethnicity in admissions decisions.

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.

I, Daniel Blake, the new film from esteemed British director Ken Loach, won the top prize at this year's Cannes International Film Festival — and it's sparking protest across the U.K.

Jazz critic Francis Davis says veteran musicians — particularly Wadada Leo Smith and Henry Threadgill — are making some of the most adventurous music of their careers.

The Full Circle Everest team will be scaling Everest next year in an attempt to make history. But it's not just about the climb. They also want to inspire Black people to explore the outdoors.