Oceans that contain clams and worms release 8 times more methane than those without, according to new research.
The program at China Conservation and Research Centre for the Giant Panda has its most successful year ever, with 42 cubs born in 2017.
Easter Island has been used as an example of humankind's selfishness; a moral tale of the dangers of environmental destruction. But new research is painting a different picture.
The star, nicknamed Kronos after the child-eating Titan of Greek mythology, is the clearest and most dramatic case observed to date of a sun-like star consuming its own planets.
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.
A breakthrough in the research, scientists believe, would help prevent humanitarian disasters and false alarms.
The participants must remain in the same position for entire duration of the Nasa study, which causes their bodies to adapt as if they were in space.
The data transmitted by Sentinel-5p will also help scientists to further study the formation of holes in the Earth's ozone layer.
Psilocybin makes a brain circuit involved in depression break down and reform. The process relieves symptoms in up to half of people for who standard treatments haven't worked.
The disease is caused by a virus and is most common in children under the age of 10 due to their weak immune systems.
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 successful feat marks the third time SpaceX has used a "flight proven" Falcon 9 rocket booster.
One of the main drawbacks of renewable energy is its variability, but storing the electricity generated in batteries is prohibitively expensive with current technology.
The wearable device shows considerable promise for meeting the demands of a wide range of defence and security scenarios.