Catalans wave 'estelada' flags through the streets of Barcelona during a mass demonstration calling for the independence of their region. Unlike in Scotland - which held its referendum on 18th September - Catalonia has been given no such vote and, much to the chagrin of separatists in the northeast of the country, the central government in Madrid insists that a vote would be illegal.Launch Slideshow 6 PHOTOS
The jihadists that beheaded James Foley were willing to barter him for a 42-year-old neuroscientist
Scientists have figured out a way to use nanoparticles to bend light around objects, rendering them invisible
Videos are more visceral than any after-the-fact journalism, and hard to deny.
In a game of catch up with the natural world, half-insect, half-machine drones are big news in computer engineering
"Few things effectively communicate the power we've built in fighting dark money & anti-worker policies like billionaire-funded groups blowing tons of cash on wack billboards," said New York Representative Alexandria Ocasio-Cortez.
“North Korea’s diplomacy has taken an unprecedented tactical course, which is tailor-made for Trump,” warned Thae Yong Ho, a former North Korean deputy ambassador to Britain who defected in 2016.
Disproportionate media coverage encourages Americans to fear the "Muslim terrorist" and ignore other threats, researchers warned.
The Vermont senator faces competition from high-profile Democrats, including Cory Booker and Elizabeth Warren.
President Donald Trump's space force could "increase the likelihood of conflict" in outer space, warned Laura Grego, a senior scientist with the Union of Concerned Scientists.
Rosen will replace Rod Rosenstein, who has been attacked recently by the president over claims of a secret taping plot.
Even Charles Darwin and Alfred Russel Wallace discussed the unusual black and white pattern of zebras.
Study adds to growing evidence that blood cells play a role in cognitive decline—but human implications are still a long way off.