New findings point to the Roman structure being used as a fortress in the 12th century.
Modafinil, methylphenidate and caffeine all led to an increase in chess players' scores.
Humans are evolved to be aggressive and technological advances create apocalyptic potential.
Nasa's Cold Atom Lab has been designed to create temperatures 'over a 100 million times colder than the depths of space.'
The creature had consumed coins thrown by visitors in a pool for good luck.
Limiting climate change to 2C warming still would not stop the Arctic ice from melting away.
People minded for iron and lead since the Stone Age in Poland.
Stones are thrown at a herd of 25 elephants when they come out of the forest.
Musk needs to know that not everybody is on board with his apparent space race.
This year's 22 award-winning images include a 3D model of a pig's eyeball, a parrot's intricate system of blood vessels and a visualisation of tweets about breast cancer.
Black and white colouration is rarely seen in nature and has posed a long-standing problem for researchers.
Cold water sinks – but in in the polar seas, what goes down must come up.
WHO claims quarter of all global deaths of children under five caused by filthy environment.
Interactive quiz marks 37th anniversary of opening of Komodo National Park in Indonesia.
Car manufacturer pledged to cut its emissions following the scandal
Arrival of the gas also leaves questions over fracking in the UK
Nasa believes a magnetic field around Mars could help further human exploration and colonisation.
'It's time for America to go back to the Moon and this time to stay,' Bezos said.
IBTimes UK visits Tete province, where World Vision is assisting a drought-stricken population.
The forests include abundant populations of many species including tigers, leopards, elephants, bears.
The Batagaika crater is a megaslump that continues growing.
Notorious Boniface Matthew Mariango sentenced in Tanzania on #WorldWildlifeDay in 'major breakthrough'.
Supercontinents are fascinating subjects for scientists, but remain a source of intense debate.
IBTimes UK lists the coolest of Nasa's now freely available software.
The world's wildlife is under threat - but you can help.
Analysis of 4,300-year-old mammoth fossil from Wrangel Island shows excess of detrimental mutations.
The patterns of trees growing in the Amazon are 'ancient footprints' of the communities that cultivated them hundreds of years ago.
Shark which normally stays in tropical water washed up on Devon beach.
Bees adapting to abundance of plastic in environment but it's unlikely to lead to successful nests.
A team of scientists has stumbled upon the stunning creature while exploring the Utu Seamount.