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Carlo Rovelli's new book is a gem: It's full of wonderful analogies and imagery — and is a celebration of the human spirit, in "permanent doubt, the deep source of science," says Marcelo Gleiser.

Artemisinin-based medications have long been the treatment of choice for malaria. But late in 2015, health officials in Britain came across a cluster of cases that refused to succumb to the drugs.

Russian state television welcomed the change in tone between Washington and Moscow following open hostility in the last weeks of Barack Obama's presidency.

After President Trump suspended immigration from seven countries, permanent residents have been detained at airports across the country.

Prime Minister Theresa May said at a news conference that she was convinced a trade deal was in the national interest of both countries. She also said Trump confirmed he is "100 percent behind NATO."

President Trump wants complete victory over the Islamic State, which is on the defensive. But translating battlefield gains into a comprehensive political solution is still a daunting challenge.

Republicans are holding their annual congressional retreat in Philadelphia, where they hope to find consensus on the party's strategy to repeal and replace Obamacare.

President Donald Trump signed executive actions Wednesday to begin construction of a U.S.-Mexico border wall and cut federal grants for sanctuary cities.

People who text while walking change their pace and seem to walk more cautiously, a study says. But that doesn't mean you're not a menace to yourself and others.

Arizona has one of the highest rates of uninsured kids in the U.S. The federal health law put a dent in those numbers, but child advocates fear any gains will disappear if the law is repealed.