Before we start finding and creating a ton of CES gadget videos over the next week, here's today's science lesson, courtesy of YouTuber minute physics. Today's topic is on tides, and why the moon gives us two high tides and low tides instead of just one. Also, why you can never survive flying into a black hole.
Read more of Keith Shaw's ITworld.TV blog and follow the latest IT news at ITworld. Follow Keith on Twitter at @shawkeith. For the latest IT news, analysis and how-tos, follow ITworld on Twitter and Facebook.