The High Tech Farms Where Our Future Food Will Grow in Nothing But Air

If our planet is going to support an extra four billion people by the end of the century, we'll need to find some creative new ways to feed ourselves. One option would be to turn buildings into farms and grow our crops in the air. Another: To install networked food computers in everybody's home. I'm not even kidding. » 3/05/15 11:00am 3/05/15 11:00am