Wildlife populations 'plummeting'

Hugging benefits fractious chimps
A new study provides the first evidence that consolation in primates, such as hugging and stroking, can reduce stress levels after a fight.

Beatles' tunes aid memory recall
Scientists investigate how our memories of Beatles songs help us tap into the long forgotten events in our lives.

'Climate crisis' needs brain gain
The former UK chief scientist says the climate challenge is so great, it demands the most brilliant minds tackle it.

China sets dates for space launch
China will launch its third manned space mission in late September, state-run news agency Xinhua reports.

Mammoth skull raised from ground
Palaeontologists lift a "rare" mammoth skull out of its resting place in France and move it to a museum.