A new tooth-regenerating paste could reverse bacterial-induced tooth decay, sweeping dental drills into the dustbin of history. Hopefully.
As your hygienist probably told you, tooth decay happens when bacteria in plaque dissolve your enamel, creating cavities. Eventually the cavity gets big enough that your dentist has to take out the decay and drill a hole that can be filled with resin, gold or something else. But a new treatment developed at the University of Leeds in the UK reverses the decay, allowing your teeth to rebuild themselves.
Using NASA’s Wide-field Infrared Survey Explorer telescope, astronomers have finally spotted a collection of ultra-cool brown dwarfs they have been hunting for more than a decade. These tepid almost-star orbs are nearly impossible to see with a normal telescope, but WISE’s infrared vision was able to pick them out.
One of the scientists responsible for cloning Dolly the sheep 15 years ago is developing a new cloning technique that he believes could help save endangered species. The work would initially benefit the Scottish wildcat, a relative of the domestic cat that lives in the woods of the Scottish Highlands. But if it works, it could be a new way to clone several kinds of animals.
In the collective modern imagination, crop circles are usually attributed to either aliens or a vast human conspiracy; possibly both. Some circle-watchers believe the designs are landing strips, maybe, or some kind of communiqué from outer space. Others argue they're the result of secret government tests, or perhaps secret codes meant to convey information to satellites and aerial drones.
For all the talk about who makes them, few people discuss how. Do people (or little green men) stomp around willy-nilly until the stalks fall down? Or is something decidedly more high-tech going on? We talked to a circlemaker and a materials physicist to get some answers.
It's a fair scientific question, according to Richard Taylor, a professor of physics and art at the University of Oregon. He believes circlemakers, as they're known, are using some advanced technology, from microwaves to GPS, to make their increasingly complicated designs.
Plenty of East Coast humans may have freaked out during yesterday’s earthquake, but what about the animals? At the Smithsonian’s National Zoo in Washington, D.C., some animals were slightly jittery, while many weathered the quake with grace and aplomb. Except for the black-and-rufous giant elephant shrew. He was a real wuss.
Less than three weeks from now marks the 10th anniversary of the Sept. 11 terrorist attacks, one of the most traumatic events in modern memory and the motivation behind the persistent wars in the Middle East. If you could take a pill that would make you forget that day, would you do it?
Proponents of panspermia theory say life on Earth came from elsewhere, hitching a ride on rocks sheared from other worlds or from migratory asteroids. But what if life did originate here and then it left, hitching a ride on Earth-departed rocks? Earth could seed other worlds, instead of the other way around. A new analysis says the rocks could conceivably make it as far as Jupiter.
Commanding an army of drones is one thing; letting drones command themselves is something else entirely, especially when they have very little in common. Boeing recently tested a swarm network to help disparate drones work together, sending two types of unmanned aerial vehicles on a reconnaissance mission over eastern Oregon.
Until American companies start launching private spaceships, Russian-built space capsules will be the only way to get astronauts up to the International Space Station or other orbital outposts. If these images are accurate at all, Russian-built spacecraft might as well stay the only option. Doesn't this look cozy?