People feared the computer glitch would mean "the end of the world as we know it." Thankfully, Y2K didn't live up to the hype after years and billions of dollars were spent on painstaking preparation.
Zachary Loeb, Purdue University assistant professor, tells NPR's Juana Summers that the real story of Y2k wasn't about computers run amok. It was about experts sounding an alarm, and fixing problems.
A lesser-known amphibious landing along France's Mediterranean played a big role in liberating the country from the Nazis. Those troops were under French command, but hailed mostly from Africa.
Triggered by a 9.1 magnitude earthquake off the coast of the Indonesian island of Sumatra, the catastrophic event was the deadliest tsunami in recorded history.
For decades, mathematicians tried to come up with the optimal sofa shape to move around a corner. Post-doctoral student Jineon Baek posted a 100-page proof that claims to solve the problem.