Scientists hide gold with 3D “invisibility cloak”

German scientists have created a three-dimensional “invisibility cloak” that can hide objects by bending light waves. findings, published in the journal Science on Thursday, could in the future make it possible large objects invisible, but for now the researchers said they were not keen to speculate on possible applications. “For now these…cloaking devices are just…

Health care crunch time

A look back at history shows the strained relationship between health care and the U.S. government. Not long ago, the most prominent supporters of the public option were touting it as essential for health care reform. Now, suddenly, it’s incidental. In fact, many who were lauding a public option as the key to a better…

Trending twitter account statistics for active users

Truth About the Average Twitter User [STATS] A new study from security firm Barracuda Labs provides some interesting insights into the state of the Twitterverse. Unfortunately for the microblogging startup, the stats say that most of its users aren’t very active. The study looked at around 19 million Twitter accounts (PDF) in order to figure…