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When siblings share a womb, sex hormones from a male fetus can cause lasting changes in a female littermate. This effect exists for all kinds of mammals — perhaps humans too.

Skinny jeans are out and looser pants are in. But it's so much more than that. This is the logic and life cycle behind fashion trends.

Moderate Republicans in Vermont are pondering their next move after falling short in their effort to stop Donald Trump from becoming their party’s presidential nominee.

A study finds tiny leaks from loose fittings added up to more emissions than when stoves were in use. The impact of U.S. gas stoves on climate change amounts to the same effect as a half-million cars.

NPR’S Ailsa Chang talks with former Israeli diplomat Alon Pinkas, about whether Israel might be provoking an escalation in the Middle East that could drag the U.S. into conflict.

The pope worked to repair relations within the Christian world, but things were tougher in the Catholic world. A church historian says no other pope has met as much opposition from bishops and clergy.

You can now go CharlieCard-free on the MBTA. The new “Tap to Ride” system lets riders use credit cards, phones and even smartwatches to directly pay fares on buses and subways. Here are some tips to ensure your first ride goes smoothly.

The protests began in July as students demanded an end to a quota system that reserved 30% of government jobs for families of veterans who fought in Bangladesh’s war of independence against Pakistan.

Many were disappointed when President Obama announced he would delay immigration reform until after mid-term elections. NPR's Wade Goodwyn talks to White House domestic policy chief Cecilia Munoz.

For two weeks, political controversy and online harassment had loomed over Khelif's participation in the Olympics. On Friday, she claimed Olympic gold and called her critics the "enemies of success."