New research finds this affects children as young as three.
Bears are cute, but cuddling them is always a bad idea
The pioneering spacecraft has revolutionised our understanding of the solar system.
The week's best photos from around the world, from Hurricane Irma and Mexico earthquake to the Rohingya crisis and Australia's same-sex marriage vote.
Listening to complex music really can make a man's face look more appealing.
Nasa has previously confirmed that the machine could work, but that they have no idea how.
Data from Nasa's Dawn mission suggests that the asteroid may contain ice buried under its surface.
The creature has sharp teeth - but no one can say for sure what it is.
Spectacular space images from the winners of the Insight Astronomy Photographer of the Year 2017 competition.
WASP-12b lies 1,400 light years from Earth and is twice the size of Jupiter.
Until 2013, the bird had not been seen alive by a single human for more than 100 years.
No other creature has ever had legs quite like this one.
The fearsome crocodile lived among the dinosaurs during the Cretaceous Period.
'All six wheels have more than enough working lifespan remaining to get the vehicle to all destinations planned'.
Nasa will start a live video coverage of the event from 7 am EDT on 15 September.
The female giant panda died of multiple illnesses.
Greek authorities have appealed to swimmers to stay away from the beaches in the southern suburbs of Athens after thick black oil began washing up.
Winners and shortlisted images include a mosquito's foot and a skull-shaped tapeworm that latches onto the intestine of its host.
The atmospheric temperature of the planet, WASP-19b, is around 2,000 Celsius, say reports.
Behaviour was documented at Palmyra Atoll in the middle of the Pacific Ocean.
A new study suggests there is a relationship between earthquakes and the culture of Ancient Greece.
The 45-year-old Agia Zoni II sank while anchored off the coast of the island of Salamina (also known as Salamis), close to Greece's main port of Piraeus.
The team used cutting-edge technology to identify the prehistoric artwork.
The first primates are thought to have spent most of their time in the trees.
But they're not necessarily very nice to each other.
Scientists found traces of complex animals which pre-date the oldest known fossils.
Britain's Defence Minister Michael Fallon said his government's effort was "as good as anybody else's". But is it?
The spacecraft will fall into Saturn's atmosphere on Friday, 15 September.
Nasa also released a letter penned by astronaut Frank Culbertson, who was the only crew member aboard the ISS at the time of the attacks.
A snarling tiger cub, playful brown bears and a tiny seahorse clinging to a cotton bud are among the beautiful photos on this year's shortlist.