Astronomers have discovered seven Earth-sized planets orbiting a single star - a record number.
New video is released of the Antarctic ice crack that promises to produce a giant berg.
Particles of debris from car tyres are ending up in the ocean as "plastic soup", a conservationist group warns.
Is it possible to revive the woolly mammoth?
Fuelling the jet engine in a supersonic car
Once too precious to use, now too cheap to notice
How smartphones are helping to both catch and protect fish
Apollo 1 fire has had a far-reaching legacy
Tesla chief determined to engage with Trump White House
Stories from the natural world
Can I really boost my immune system?