A start-up called Codecademy is teaching JavaScript online for free, with 300,000 takers so far. Michael Moyer reports

Service Teaches Computer Code Online Free

Scientific American Online associate tech editor Larry Greenemeier provides a weekly minute commentary on some of the most interesting developments in the world of technology

Science

Researchers revealed their latest prototype contact lenses that magnify vision almost three times with the wink of an eye. Larry Greenemeier reports

Contact Lens Binoculars Are in Sight

Users of the K-cup coffee company’s products have counterattacked against its efforts to restrict the brands that their new machines can brew. Larry Greenemeier reports

Keurig Coffee Drinkers Hack Back

Law enforcement agencies have handheld radar that can “see” through walls via RF signals, raising Fourth Amendment concerns. Larry Greenemeier reports

Radar Makes All Houses Glass

Researchers have made a secure, waterproof wireless keyboard that gets charged by the action of your fingertips as you type. Larry Greenemeier reports

Smart Keyboard Gets a Charge out of You

SpaceX’s Elon Musk and fellow tech mogel Greg Wyler both have plans for low Earth orbit satellite networks that could fill in many of the world's current gaps in Internet coverage. Larry Greenemeier reports 
 

Service Teaches Computer Code Online Free

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