SCIENCE

Microbes emitting methane caused 90% of species on Earth went extinct millions of years ago.

Best photos of the day: 1 April 2014.

Enter the 2014 National Geographic Traveler Photo Contest and you could win an expedition to Alaska

A UN report on climate change says global warming is more severe than previously thought.

Defra advises adults and children with lung problems and older people to avoid strenuous exercise.

Inspired by Google Glass, researchers built an underwater translator that turns dolphin whistles into English

Quake felt 20 miles away from epicentre but no damage or injuries reported

Upcoming IPCC report warns of increased conflict and mass migrations as climate change intensifies.

Scientists claim huge coal deposits under North Sea could fuel Britain's energy needs.

Temperatures are predicting to rise to 20C on Mother's Day, the first day of British Summer Time.

7,000 cities and towns from Sydney to Los Angeles take part in WWF's mass Earth Hour event.

Pioneering technique builds up profile of offender like DNA.

Aviation experts believe US Airforce is testing secret new military plane.

Is 5.1 magnitude LA tremor a warning of worse to come?

Oso's mudslide was bad – but America could be hit by a landslide of armageddon proportions.

National University of Singapore researchers have developed the first date rape drug test to identify Gamma-hydroxybutyric acid.

Researchers create generator that uses human body as electrode instead of batteries

A new study challenges the common misconception that goats aren't intelligent animals.

Best photos of the day: 28 March 2014.

Tigers, rhinos, elephants and orang-utans now protected 'by Islamic edict'

Death-toll from Oso may hit 190 – but it's not the worst ever

Nasa releases image of comet set to come within 84,000 miles of Mars.

How to watch the moon, Venus and Mercury appear in conjunction just before dawn tomorrow morning.

Report says even small nuclear war would have huge effect on climate change.

Ancient marine animal from 520 million years ago used facial appendages to eat.

Best photos of the day: 27 March 2014.

New planet supports existence of little-known 'Oort Cloud' and a 'Super Earth' beyond solar system

Record-breaking temperatures of 2003 to become the norm because of manmade global warming

Scientists discover ring systems can exist on smaller objects orbiting the sun