Satellite tracking shows fishing's footprint on Earth is now over four times that of agriculture.
US scientists develop sensors to allow doctors to follow their patients' progress away from the clinic.
Rare chimps, leopards and pangolins have been caught on camera in the forests of Nigeria's largest national park.
Mini satellites to fill the world's 'not spots'
How should the UK dispose of its plastic waste?
Why the Jaws shark is not a 'man-eating monster'
Underwater Photographer of the Year competition
Elon Musk: The entrepreneur behind Tesla and the Falcon Heavy
How to stop a supersonic car from sliding sideways
"We've been sent a leg"
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