A pair of crossed logs in Zambia are nearly half a million years old and provide a rare look at how ancient human relatives were working with wood and changing their environments.

Scientists say there could be more, or bigger, black hole mergers happening out in space than we thought – or point to other sources of gravitational waves that could challenge our understanding of the universe.

The goal is ‘doing chemistry inside human patients to make sure that drugs go to the right place and stay away from the wrong place,’ says one of the Americans who shared the prize.

Their work settles a debate about quantum mechanics between Albert Einstein and famed physicist Niels Bohr. It turns out Einstein was wrong.