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Japanese researchers said they had grown normal-looking teeth from single cells in lab dishes, and transplanted them into mice. They used primitive cells, not quite as early as stem cells, and injected them into a framework of collagen, the material
If you're worried about terrorism, upset about the war in Iraq, and depressed by global chaos, violence, and death, cheer up. We've just invented a weapon that fires a beam of searing pain. Three weeks ago, the US armed forces tested it on
Researchers are trying to find ways to regrow fingers—and someday, even limbs—with tricks that sound like magic spells from a Harry Potter novel. There's the guy who sliced off a fingertip but grew it back, after he treated the wound with an e
New evidence shows that the human brain can manufacture fresh brain cells, researchers said in a study that may lead to better ways to treat brain damage and disease.
Carbot said he would like to extract a sample from the frog's remains to see if they contain well-preserved DNA, in order to identify the frog's species. However, he expressed doubt that the stone's owner would allow it.
The camera's data is, in turn, sent wirelessly directly to the implant, whose electrodes decode the message into an electrical impulse that can be directed to the brain for visual interpretation.
Bats, lauded for scooping up mosquitoes and other nasty pests but reviled for drinking blood and spreading rabies, now have another unpopular habit to live down -- it appears they eat songbirds, scientists said.
Huge deep-sea squid use blinding flashes of light from their armtips to disorientate their prey before attacking at speed, Japanese researchers report.
A Mexican man has discovered dozens of dinosaur footprints dating back up to 110 million years along the banks of a dried river, scientists said. Biologist Oscar Polaco said the footprints, found by a local resident in a desert region in central Mexi
Recent theoretical predictions suggest that, at times, the benefits of inbreeding might outweigh the costs. Now a evolutionary biologist has discovered real-life evidence in support of these predictions in a small monogamous fish that lives in the ri
A germ that kills males triggers a vicious cycle of increasing female promiscuity and male sexual exhaustion in a species of butterfly. The germs can also turn males to females and cause infected females to reproduce without males.
2 newly reported complete skeletons of primates show that this group that includes humans' closest relatives such as chimps and lemurs is 10 million years older than previously thought, pushing our earliest ancestors closer to the Age of Dinosaur
The new motor mechanism will enable scientists to do things that are much closer to what biological machines do.
Abraham Lincoln may have suffered from a genetic disorder that literally shattered his nerves. Many of the president's descendants have a gene mutation that affects the part of the brain controlling movement and coordination,
After the skeletal remains of an 18,000-year-old, Hobbit-sized human were discovered on the Indonesian island of Flores in 2003, some scientists thought that the specimen must have been a pygmy or a microcephalic -- a human with an abnormally small s
The spinal cord seethes with a tug of war between electrical signals, overturning thinking on how it works. These conflicting signals could help animals respond more rapidly, and could shed light on how our brains evolved, researchers said.
Tears can signal everything from sorrow to joy, but until recently little was known about the composition of the tear itself. So little in fact that scientists discovered an entirely new class of lipids—a type of fat—while researching the tear’s desi
For a 24-hour view of one of the most vibrant coral reefs on Earth, book a room at the world's first underwater hotel (look for the YouTube video link at the end of the article)
What puts that sexy twinkle in a spider's eye? A mate aglow. Take away the ultraviolet portion of light, and what seemed like the arachnid version of Scarlett Johansson or Matthew McConaughey attracts no more lust than plain Jane or dumpy Dan.
Caves in the Sun-scorched, treeless wilderness of southern Australia's Nullarbor plain have revealed one of the world's most remarkable collections of fossils, including species of now-extinct kangaroos that lived hundreds of thousands of yea
When the Wright Brothers first took to the sky in a biplane, they were using a design nature may have tried 125 million years earlier. A new study of one of the earliest feathered dinosaurs suggests it may have had upper and lower sets of wings, much
Recent advances in nanoscience and nanotechnology have open up myriad opportunities for application and commercialization. Nanotechnology's ability to manipulate atoms and molecules enables us to create nanoscale materials and novel devices
A widely used blood-pressure drug reduced muscle damage in mice with the most common form of muscular dystrophy, researchers report. The drug losartan seemed to improve muscle regeneration in mice with a rare condition known as Marfan syndrome and in
Ethnic differences in levels of HDL, the "good" cholesterol, may be due, at least in part, to diet, a new study from Canada suggests. South Asians ate the most carbohydrate and had the lowest HDL cholesterol levels, while Chinese individ
Altruism, one of the most difficult human behaviors to define, can be detected in brain scans, U.S. researchers reported. Activity in a specific area of the brain could predict altruistic behavior -- and people's own reports of how selfish or giv
Scientists have uncovered for the first time secrets about how male seahorses produce their young that could prove valuable in conservation efforts to save the vulnerable species. Unlike other animals and humans in which the female becomes pregna
Scientists said that they had achieved a long-sought goal of slowing waves of light to a relatively leisurely pace and using those harnessed pulses to store an image.
Daydreaming seems to be the default setting of the human mind and certain brain regions are devoted to it, U.S. researchers reported. "There is this network of regions that always seems to be active when you don't give people something to do
A Las Vegas doctor has been implanting stem cells harvested from placentas into patients with multiple sclerosis, muscular dystrophy and other diseases in violation of federal law, according to a warning letter released by health officials
A beetle with scales as pale as a ghost could help engineers come up with super-thin, paper-white paints, new research shows. The long, flat overlapping scales that cover the head, body and legs of the white Cyphochilus beetle, a common sugar
