“Are you on your period?” It’s a question most women have been asked at one point or another by their boyfriend or spouse during a disagreement. It turns out that some men actually can tell when it’s a woman’s time of the month—and it’s not because of bratty behavior.
Women who bemoan their once-a-month curse may soon have reason to appreciate it: Chelsea Briganti, a senior at the Parsons New School for Design, has developed a tampon-like kit made from silicone that collects and stores adult stem cells from the wearer's menstrual blood.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.