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.
New research suggests Beijing will lead the green energy revolution thanks to ongoing policy support.
The most likely candidate for colonisation will be the planet Proxima b which is around 4 light years away.
Technique uses nanotechnology to manipulate particles on a tiny scale.
The skull shape was closely related to the size and shape of the brain within.
Soriatitan golmayensis is thought to have lived between 130 and 138 million years ago.
At least 91 people were killed by the massive earthquake that struck off the coast of southern Mexico on Thursday (7 September).
Longer sentences for rapists contribute to a more egalitarian, peaceful society.
A Japanese garden plant's colour was changed from violet to white by altering a single gene.
It will be 2 dimensional, a yard across, and half the thickness of human hair.
Scientists estimate that around 9 known exoplanets are ideally placed to track the Earth's 'transit zones'.
With communication cut to some of the Florida Keys, many are holding their breath for what daylight might reveal.
Storm has lashed Florida since Sunday, severely damaging houses and key crops in the state.
This year's summer Icebridge mission started on 25 August and will go on till 21 September.
Offshore wind power now cheaper than new nuclear power, government figures show.
Seawater penetrated as much as half a kilometre (one-third of a mile) inland in places.
'Catastrophic' storm surge is feared in the Florida Peninsula, where ocean levels were quickly rising.
The 'code' is actually Latin shorthand and the book is missing an index, historian finds.
The spacecraft will dive into Saturn's atmosphere to destroy itself on September 15.
'Just get out of its way,' US President Donald Trump warned people in Florida.
Evacuees watch nervously on webcams dotted around cities, marinas and beaches.
Scientists also hope find will help them locate and track water-rich asteroids.
France's public insurance agency puts huge costs on damage to both island communities.
Around 5.6 million of Florida's residents have been told to evacuate as the hurricane approaches