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Top U.S. military officials will testify Wednesday before a House committee on the withdrawal from Afghanistan. On Tuesday, there were sharp exchanges during similar questioning by senators.

A panel of experts convened by U.S. News ranked the best diets. The Mediterranean diet comes out on top. Two new diets are ranked: the physician-created Nutritarian diet and the popular Keto diet.

The Munich Security conference kicked off Friday. Vice President Kamala Harris, European leaders and China's top diplomat are in attendance. Top of the agenda is the war in Ukraine.

How do skyscrapers withstand 100-mph winds? How does air circulate inside tall buildings? And what happens when you flush a toilet on the 100th floor? Those questions and more are answered by Kate Ascher in her new book exploring the inner workings of skyscrapers.

Scott Kirby, United Airlines CEO, has been very public about the shortage of air traffic controllers -- which he says should be a top priority for the second Trump administration.

Federal forecasters say the El Nino climate pattern is on its way out, after a year where it helped break global heat records. So what does that mean for this coming year?

Secretary of State John Kerry gave his first major foreign policy speech Wednesday at the University of Virginia. His comments come days before he leaves on his first trip as America's top diplomat. He's traveling to Europe and the Middle East.

Foreign ministers from the world's top economies are meeting for the G20 in South Africa. But the U.S. is conspicuous in its absence.

NATO foreign ministers will meet in Brussels Wednesday, and the ongoing negotiations to end the war in Ukraine will be top of mind. But there will be a notable absence: The U.S.

Scientists have measured all kinds of athletes, and one sport consistently come out on top for maximizing the body's ability to convert oxygen to energy.