The smallest and rarest marine dolphin in the world could be extinct within 15 years if protection is not stepped up, according to research.

Parts of the iconic Great Orme headland in north Wales are safeguarded for the future after being bought by the National Trust.

A volcanic eruption on one of the Galapagos Islands potentially puts Charles Darwin's evolution ecosystem at risk.

The Antarctic ozone hole would have been 40% bigger and a hole over the Arctic would have opened up if ozone-depleting chemicals had not been phased out, according to research.