Uploaded November 2008 | Updated September 2026, 34 minutes ago

---

You might have heard about new research that showed girls hands have more bacteria than guys... But it gets even weirder. Your right hand has different kinds of bacteria than your left, and hand washing is effective but ONLY for a short while. Before this sends you off to give your hands a scrubbing, check out this video for some more "hand-y" bacteria information.
sciencentral.com/video