Bezos and Musk have repeatedly clashed over their ambitions to dominate space. The billionaires both bid for Nasa’s ...

In the central Sahara, where sand now buries ancient lakes, scientists have pulled genetic material from 7,000-year-old mummified women and found DNA that does not match any living population. The ...

Attention marathon runners, triathletes and other endurance athletes: If you’re after a high-end sports watch, minus the ...