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From Ireland to the Balkans, Europeans are basically one big family, closely related to one another for the past thousand years, according to a new study of the DNA of people from across the continent.
The study, co-authored by Graham Coop, a professor of evolution and ecology at the University of California, Davis, will be published May 7 in the journal PLoS Biology.
Scientists searching for signs of life beyond our solar system should keep an open mind, for planets very different than Earth may well be habitable, a prominent researcher says.
While it may seem natural to zero in on "alien Earths," such a narrow focus would exclude many potentially life-supporting exoplanets, whose diversity continues to astound astronomers, says Sara Seager of MIT.
And researchers can't afford to be so picky, she adds, since they'll be able to get in-depth looks at just a handful of alien worlds for the foreseeable future.
On April 27, NASA's Fermi and Swift satellites detected a strong signal from the brightest gamma-ray burst in decades. Because this was relatively close, it was thousands of times brighter than the typical gamma-ray bursts that are seen by Swift every few days. Scientists are now scrambling to learn more.
We already knew that when the biggest stars run out of fuel, they don't fade quietly away. Instead, they explode in a blaze of glory known as a supernova. These stellar explosions are often bright enough to be seen by us even though they are in galaxies billions of light-years from our own Milky Way galaxy home.
NASA's Curiosity rover is back at work in Yellowknife Bay, a rocky area inside Mars' Gale Crater — and if it takes good care of itself, it just might still be at work when humans hit the Red Planet.
At least that's the sentiment voiced by Michael Meyer, lead scientist for NASA's Mars Exploration Program, during this week's Humans to Mars Summit in Washington. "I anticipate the first astronaut we send can go and shake Curiosity's hand," he told Monday's audience at George Washington University. If that astronaut is able to come within hand-shaking distance, the gesture would serve as a thank-you for years of service by the nuclear-powered robot, Meyer said.
With enough money and enough might, humans could probably get to Mars in the next couple of decades. It’s a proposition made all the more relevant by the continuing findings of the rovers Opportunity and Curiosity. It would be a mammoth undertaking, but it's possible, at least in concept. But should humans go, and should we stay? Will we? Buzz Aldrin thinks so. |   CA - UK - US |
Some things you just count on. Like if we ever meet a space alien, it should have eyes (and maybe a head). Like somewhere out there, there are planets like ours. Like we have an ordinary solar system — "ordinary" because you know what it looks like ...
It's got a sun in the middle, little planets on the inside, bigger ones farther out. That's what most of them should look like, no?
An experiment buried beneath the ice of the South Pole has for the first time seen the particles called neutrinos originating outside our Solar System. |  |
Researchers have pinpointed a set of biological markers that could help diagnose PTSD--and, eventually, treat it.
A molecular imaging study has pinpointed a set of biological markers that could help diagnose post-traumatic stress disorder more accurately, and might even lead to a pharmacological treatment in the future.
Smoking cannabis may prevent the development of diabetes, one of the most rapidly rising chronic disorders in the world.
If the link is proved, it could lead to the development of treatments based on the active ingredient of cannabis, tetrahydrocannabinol (THC), without its intoxicating effects.
The helicopter appears as a speck on the horizon, moving slowly on a dead-straight path over the black volcanic island. Beneath it hangs a huge metal cone: an industrial-scale hopper that is sending a steady stream of blue pellets raining down on the scrubby landscape of Pinzón, one of the Galapagos Islands.
Erin Hagen watches through her binoculars. She is standing on the deck of the Sierra Negra, one of three vessels moored just off the island on this morning in November 2012. When the helicopter reaches the rocky shoreline, it changes course, heads across the ocean and hovers just above the boat.
In order to get off oil as our main energy source, renewable energy needs to be cost-competitive with natural gas and coal. Innovations in solar and wind power are making strides toward that goal, but it will take a major paradigm shift to bring them both down in cost. |  |
New images of a possible lost city hidden by Honduran rain forests show what might be the building foundations and mounds of Ciudad Blanca, a never-confirmed legendary metropolis. |  |
Find suggests Old World monkeys and apes diverged 25 million years ago.
Palaeontologists working in Tanzania have discovered the oldest known fossils from two major primate groups — Old World monkeys, which include baboons and macaques, and apes, which include humans and chimpanzees. The study, published online today in Nature1, reveals new information about primate evolution.
A new species of dinosaur-era sea reptile is rewriting the books on the evolution of so-called sea monsters, a new study claims.
The newfound—and potentially controversial—Malawania anachronus was a ten-foot (three-meter) long ichthyosaur, a group of dolphin-like creatures that could grow to 65 feet (20 meters) in length. These fast-swimming predators peaked in diversity during the Jurassic period.
"IT'S BEEN called the Galapagos of the subsurface." Barbara Sherwood Lollar's enthusiasm for the fertile watery world her team has found 2.5 kilometres beneath Earth's surface is palpable. The water circulates through fractures in the rocks of a Canadian copper mine. Dating techniques indicate it has been isolated from the rest of the planet for up to 2.64 billion years – making it a time capsule from the early days of life on Earth. |  |
Researchers have published their most advanced calculation for the likely impact of melting ice on global sea levels.
The EU-funded team says the ice sheets and glaciers could add 36.8cm to the oceans by 2100.
Adding in other factors, sea levels could rise by up to 69cm, higher than previous predictions.
Earth's global thaw has reached Mount Everest, the world's tallest peak, researchers said Tuesday at the Meeting of the Americas in Cancun, Mexico.
Glaciers in the Mount Everest region have shrunk by 13 percent in the last 50 years and the snowline has shifted upward by 590 feet, Sudeep Thakuri, a graduate student at the University of Milan in Italy, said in a statement. Located in the Himalaya Mountains on the border between China and Nepal, Everest's summit is 29,029 feet above sea level.
The best way to feed the 9 billion people expected to be alive by 2050 could be to rear billions of common houseflies on a diet of human faeces and abattoir blood and grind them up to use as animal feed, a UN report published on Monday suggests. Doing so would reduce the pressure on the Earth's forests and seas as food sources. |  |
Northwestern University scientists have struck gold in the laboratory. They have discovered an inexpensive and environmentally benign method that uses simple cornstarch -- instead of cyanide -- to isolate gold from raw materials in a selective manner.
This green method extracts gold from crude sources and leaves behind other metals that are often found mixed together with the crude gold. The new process also can be used to extract gold from consumer electronic waste.
Supporters of Nikola Tesla, who lighted the planet with alternating current but died penniless, announced on Thursday that they had completed the purchase of his decaying laboratory on Long Island and begun raising $10 million for its restoration and the establishment of a museum and educational memorial. |  |
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