Scientists detected the gravitational waves after a pair of unusual black holes collided.
Is the flurry of productivity in the lame duck Congress setting Obama up as a “comeback kid?” So far, Congress has passed a tax-cut compromise, a repeal of the military’s “Don’t Ask Don’t Tell” policy and a food safety bill.
On the agenda this week are the START nuclear arms treaty with Russia and a bill providing extra benefits to 9/11 emergency responders. We take a look at the week ahead with Gail Chaddock, congressional correspondent for the Christian Science Monitor.
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.