An independent review says the safety of commercial launch vehicles must be assessed.
The claim that Himalayan glaciers will disappear in 25 years is unsubstantiated.
Physicists have captured an ion using an optical trap for the first time.
Willow Garage is giving away several self-charging, mobile robots to researchers.
Nobody knows why life on Earth is built from left-handed amino acids. But an important clue lies in the light coming from the Orion Nebula, say astrobiologists.
The properties of the universe can be derived by thinking about the origin of complexity, says a new theory.
A website has been working to map and verify information in Haiti.
The best of the rest from the Physics arXiv this week:
Despite carrying 90 percent of the planet's trade, nobody has mapped the network of links between the world's ports. Until now.
A bug in the browser was a key part of recent attacks by Chinese hackers.