Inhabitat's Week in Green: 'practical' jetpack, self-healing solar cell and lab-grown heart tissue

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. Tesla CEO Elon Musk wowed the tech and business worlds this week when he unveiled plans for a 700MPH solar-powered Hyperloop train that could catapult people from San Francisco to LA in just over half an hour. Although the plan is highly conceptual, nothing associated with Musk can be written off as fantasy these days. The news somehow managed to overshado...