Researchers create trees that are easier to break down to make paper and fuel.
Best photos of the day: 4 April 2014.
Rakuten ends whale meat sales after court orders Japan to halt Antarctic whale hunts.
A list of associations to contact to help displaced people.
Air pollution hit record levels after Sahara dust swept across parts of England
Uncontacted tribes forced to raid others as they are threatened by Amazon deforestation.
Just one coal pit is to remain in the UK following an announcement to close two.
Best photos of the day: 3 April 2014.
A major aftershock has rattled northern Chile a day after a magnitude-8.2 earthquake hit the area.
London's familiar landmarks have disappeared under a grey blanket of smog.
The ESA's Sentinel-1A launches on 3 April from Europe's Spaceport in French Guiana
Hundreds of human-sized figures made out of rubbish go on show in Israel.
BBC mandate for balance called into question for giving climate change deniers same weight as scientific fact
Best photos of the day: 2 April 2014.
A new report suggests that the poor economy may have aided the environment.
It is thought that windfarms have a negative effect on house prices, but is this the case?
People living 12 miles from Fukushima nuclear disaster site have been allowed to return home.
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.
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.
Is 5.1 magnitude LA tremor a warning of worse to come?
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