Ultrafine particles from exhaust gas filters are "worse than road traffic"

Finding will be a game changer for law enforcement agencies who have previously been unable to link some suspects with crime scenes

Although thousands of miles from the ice-sheets of Europe, the genetic record of bee species in the islands of the South Pacific carries evidence of the dramatic global effects of climate change over the past 20,000 years.

Scientists have discovered huge reserves of freshwater beneath the oceans kilometres out to sea, providing new opportunities to stave off a looming global water crisis.