A white roof reflects heat and cools a building; a dark one absorbs it. But until now there hasn't been a material that could do both.
A massive galaxy in the early universe created stars up to 100 times faster than the modern-day Milky Way, say astronomers.
Despite warnings, the IRS is continuing to put taxpayer information at risk, according to a report from the Government Accountability Office.
Cold fusion is widely regarded as being just about as practical a technology as a perpetual motion machine or the Philosopher's Stone.
EBay has always been a boon to shoplifters - an easy way to offload stolen goods. But many criminals have been doing it on an industrial scale, and now the company's teamed up with the National Retail Federation to tackle organised retail crime.
The large Hadron Collider (LHC) has set a new record, accelerating particles to the highest speed yet.
We could soon all be strolling past the checkout with a cartful of goods, thanks to the development of new, printable, nano-based RFID tags.
An invisibility cloak is one step closer to reality, with a group of German and British scientists reporting that they've successfully created a prototype that works in three dimensions.
Saturn's rings aren't as neat and tidy as they appear, new observations from NASA's Cassini spacecraft show.
Look, we'd all like our jobs to be made a little easier. But some Spanish forensic anthropologists have a rather big request - the creation of a global database of everybody in the world.
Drivers in Austin, Texas thought their cars were possessed when their horns started honking in the middle of the night or their vehicles simply wouldn't start.
Physicists have created the largest ever quantum state, allowing an object large enough to be seen by the naked eye to be in two states at once.
The Australian Human Rights Commission is threatening legal action against a US-based 'satirical' website, which it says is encouraging racial hatred against Aborigines.
New thermal images from ESO's Very Large Telescope (VLT) are allowing astronomers to take a detailed look at the solar system's largest storm.
Americans are getting more and more apathetic about environmental matters, according to a Gallup poll.
In times of economic hardship, it's good to know one sector of the economy is booming. So hats off to American cybercriminals, who apparently doubled their takings in 2009.
Britain's House of Lords has approved a bill allowing the government to shut down illegal file-sharers. Music companies are delighted.
Forensic scientists now have a new way to track criminals and terrorists - through the germs they leave behind.
Humans and other mammals could regrow lost limbs, following the identification of a gene that appears to regulate regeneration.
The Secure World Foundation (SWF) has warned the UN that it may be too disorganised to avoid disaster in the event of a major meteorite strike.