5:22 p.m. ET: TONIGHT on Nightline: Admit it, no matter how old you are, you can still remember what the bell sounded like at your school. You can still remember pushing your way through the hallways to your next class, the sound of the chalk squeaking against the chalkboard or the minute hand ticking on the clock in your math class that you swore ran slower than every other clock in the building.

But that was then. Khan Academy is now.

"Nightline" anchor Terry Moran talks to the man who made the viral online YouTube lessons. Read the full story HERE

3:07 p.m. ET: ABC's Jon Karl tweets:

Only 220 votes for Boehner as Speaker. Enough to win, but narrowly. 426 voting

- Jonathan Karl (@jonkarl) January 3, 2013

1:44 p.m. ET: Speaking of politics… "World News'" Diane Sawyer sat down with the new class of female senators to talk about their vision for moving the country forward. The Senate will swear in a historic number - 20 - women today.

Read the story HERE

Credit: Martin H. Simon/ABC

12:04 p.m. ET: Want to (politically) nerd out? Watch the live stream (and live chat!) of the swearing in of the 113th Congress HERE

10:33 .m. ET: TONIGHT on Nightline: Despite stated label risks of possible fatal heart attack, stroke or organ failure, college football players across the country are still being given injections of a powerful painkiller on game days so they can play while injured, an ABC News investigation has found.

The drug, a generic version of Toradol, is recommended for the short-term treatment of post-operative pain in hospitals but has increasingly been used in college and professional sports, and its use is not monitored by the NCAA, the governing body of college sports.

Read the full story HERE

Defensive tackle Armond Armstead of the USC Trojans waits for play against the Arizona State Sun Devils on October 10, 2008 at the Los Angeles Coliseum. (Stephen Dunn/Getty Images)