Sumatran tigers fall 17 per cent and have just two strongholds
There are now only two viable populations of Sumatran tigers left in the wild, so if the cats are to be saved those areas have to be protected
Madagascar’s lemurs close to extinction after population crash
Ring-tailed lemurs have experienced a precipitous decline over the last two decades and are now one of the 25 most endangered primates in the world
What to expect if Indonesia’s volcano erupts in a big way
Mount Agung's last big eruption was in 1963, and a major blast could create an ash cloud that disrupts air travel for weeks, and temporarily cool the global climate as well
Light pollution is set to double between now and 2050
The first global “light census” shows that the area affected by artificial lighting is growing by 2.2 per cent every year, posing risks to wildlife and human health
Keystone XL oil pipeline will go ahead despite last week’s spill
Last week the Keystone pipeline spilled 5,000 barrels of oil. This week Nebraska decided to allow the Keystone XL extension to be built right through the state
Latest climate talks actually made progress despite US obstinacy
While the US tried to promote “clean coal” at the COP23 Bonn climate meeting, other countries called for the dirty fossil fuel to be rapidly phased out
Big aftershocks could well hit Iran and Iraq in next 48 hours
The magnitude 7.3 quake that struck Iran and Iraq on Monday has already killed 400 and injured thousands, and more tremors could be on the way
Human arrivals wiped out the Caribbean’s giant ground sloths
Many giant mammals in the Americas have died out but it has been hard to say whether humans or natural events were responsible. Now, in the Caribbean at least, we know
Planting trees could mop up ten years’ worth of greenhouse gases
The planet is still warming inexorably, with 2017 set to be one of the three hottest years on record, but a major programme of tree-planting could help cool the world
China’s dreadful air pollution seems to have got a bit better
While China’s capital Beijing is once again suffering a severe smog, a new study suggests that nationally pollution has fallen 21 per cent over two years