Nasa found that heat and droughts in the tropical regions of Africa, Indonesia and South America are responsible for the surge in the release of atmospheric CO2.
Hurricane Ophelia's winds fanned more than 140 wildfires across northern Spain and Portugal, killing three in Galicia and six in Portugal.
Oceans that contain clams and worms release 8 times more methane than those without, according to new research.
The week's best news and sport photos, from California wildfires and Vietnam floods, to the battle for Raqqa, Kenya election protests and Rohingya Muslim refugee crisis.
Extensive sea ice formation in East Antarctica kill thousands of Adélie penguins – the second such devastation in four years.
The storm that hit Vietnam caused its worst flooding in years, submerging more than 30,000 houses and damaging infrastructure, crops and livestock.
Rising emissions of harmful chemicals could threaten the recovery of the Earth's protective ozone layer, 30 years after a successful international treaty was agreed to protect it.
The "canyons" are 200m deep and 15km across, and run the entire length of the underside of the Dotson ice shelf.
All cars, trucks, vans and buses must be electric vehicles in three years time. Anyone caught driving a non-electric car will be fined £60.
Scientists found that every year around 43kg of gold and 3,000kg of silver end up in Swiss sewers.
Aerial photos show enormous scale of devastation, with block after block obliterated, leaving smouldering piles of ash dotted by brick chimneys and the skeletons of burnt-out cars.
The gap, measuring around 80,000km2 at the largest, was spotted in the frozen ice of Antarctica's Weddell Sea.
One of the main drawbacks of renewable energy is its variability, but storing the electricity generated in batteries is prohibitively expensive with current technology.
Desperate family members are turning to social media as hundreds go missing in US due to widespread fires.
It only takes a few decades for the supervolcano beneath Yellowstone National Park to fill with magma. When it erupts, it could cover much of the US in ash.