Poison project
Scientist Vladimir Uglev has no doubt the agent that poisoned the Skripals was made in Russia.
Chemical attack
Experts describe the challenges facing those investigating an alleged chemical attack in Syria.
Meteorite diamonds 'came from lost planet'
The space rock that exploded in 2008 seems to have come from the early Solar System.
Reality Check
It's not as easy to recycle your takeaway coffee cup as people may have thought.
Past in focus
Ancient DNA from human remains has helped construct a new narrative for human history.
Magnetic water
Satellites make the most detailed observations yet of the magnetism generated by moving seawater.
Hunting mystery giant lightning from space
Space station mission takes storm chasing to new heights
What does the future hold for humanoid robots?
Machines that can fully mimic natural body movements are still a long way off, says Will Jackson.
Aubrey de Grey: Treating ageing as a curable disease
The scientist aims to develop therapies to repair damage at the molecular and cellular level.
NanoMap: How uncertainty helps this drone fly
MIT CSAIL's NanoMap system enables drones to avoid obstacles while flying at 20 mph (32km/h)
Stephen Hawking dies: Scientist's most memorable quotes
Remembering some of the key theories and quotes of the world renowned physicist, who has died.
Stephen Hawking: A life in pictures
The physicist, who battled motor neurone disease for most of his life, has died at the age of 76.
Visual effects behind Thor: Ragnarok
Click talks to Alexis Wajsbrot, the visual effects supervisor for Thor: Ragnarok.
