NASA chief warns of Chinese military presence in space

China is bolstering its space capabilities and is using its civilian program to mask its military objectives, the head of the US space agency NASA said Wednesday, warning that Washington must remain vigilant.

World's chocolate supply threatened by devastating virus

A rapidly spreading virus threatens the health of the cacao tree and the dried seeds from which chocolate is made, jeopardizing the global supply of the world's most popular treat.

Signs of 'spider' phenomenon on Mars

ESA's Mars Express has snapped the telltale traces of "spiders" scattered across the southern polar region of Mars.

page 3 from 40