In this issue, you’ll learn how new devices that monitor activity, sleep, diet, and even mood, could make us healthier and more productive. You'll hear how crooks peddling fake antivirus software have duped the Web in a billion-dollar rip-off. You’ll learn about a stem-cell treatment that holds out hope to people who are paralyzed. You’ll hear how the former CTO of Microsoft is trying to transform the way we eat. And you'll learn how the political trend of talking around climate change could actually increase carbon dioxide emissions.