As South Sudan becomes independent, it is the 34th new country in 20 years. How much do you know about the other new kids on the global block?
You’re not a spy or a Navy SEAL — you’re a cyber warrior, and your goal is to hack your way into a rogue nuclear facility by answering questions about the mysterious Stuxnet computer worm.
An out-of-control train is hurtling down the track toward four trapped hikers. What do you do? Test your moral intuitions in life-or-death situations with this interactive quiz.
Sure, you know your William Rehnquist and your Roe v. Wade, but what else do you know about the goings-on in the Supreme Court Building’s hallowed halls? Find out!