SpaceTears for Cassini: why it's OK to well up over a lump of metal Expect more of the modern phenomenon of mass mourning for a machine when the space probe Cassini makes its death dive into Saturn, says Joelle Renstrom Comment
EarthStripy ponds in the Utah desert help green the bone-dry landMulticoloured patchwork ponds in this desert play a key part in tapping sources of potassium chloride, a vital fertiliserRegulars