Whether it's swinging on a pendulum or riding a rocket tricycle, the former MIT professor, now on YouTube, finds different ways to assist students as they study the laws of physics.
07/27/2011 11:00 am
French comedy 'The Names of Love' mixes gravitas and friskiness to the point of becoming annoyingly superficial.
06/24/2011 05:06 pm
Michael Fassbender is magnetic in 'X-Men: First Class,' a leap up from the last 'X-Men' installment.
06/03/2011 12:33 pm
A Serbian judge approved on Friday the extradition of Ratko Mladic, the last of the three most-wanted suspects in the brutal Bosnian war in the 1990s.
05/27/2011 12:19 pm
Obama was no doubt mindful of Jewish voters in giving his Middle East speech. He'll need to work hard to win their backing again in 2012, and many are skeptical of his support for Israel.
05/20/2011 06:25 pm
Not much. A fact check on Huckabee and Romney's outrage, and Netanyahu's mention of a 2004 US 'commitment.'
05/20/2011 11:58 am
Photos of the Day Photos of the Day 05/02
Half a million European Roma were killed under the Nazi regime. One Czech town has built a memorial to make sure that, like other victims of the Nazis, the Roma are not forgotten.
03/10/2011 01:59 pm
Photos of the Day Photos of the day 02/01
As its economic clout rises, Germany sheds its postwar identity, becoming more assertive in Europe and the world.
01/30/2011 01:09 pm