Alpine ibex can ascend dam walls and near-vertical cliff faces that would defeat most four-legged animals, yet the precise ...

The name might sound like a Nordic god, but it is actually the molecular machinery that allows many different species to eat ...

Scientists at Harvard have built a miniature device that can twist and tune light in real time. By rotating two stacked ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...