Cycling at the Tour de France has taken a techie turn. Not only is Lance Armstrong posting to Twitter from the race, but a Chalkbot -- a robot that writes in water-soluble paint -- is scribing messages onto the road, offering inspiration to the competitors and to cancer survivors.
Global WarmingWhy Our Best Guess Is Probably Wrong
A So how much Earth's climate will warm due to carbon emissions is open to speculation but a new study this week suggests scientists' best predictions about global warming are likely incorrect.
Security Fix Live
Security Fix blogger Brian Krebs answers your technology questions and offers ways to protect yourself from online security threats.
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