TIP OF THE TOP: On February 20, famed theorist and professor Stephen Hawking announced the top ten finalists for the Varkey Foundation's 2016 Global Teacher Prize, a $1 million competition. Two U.S. teachers made the cut: Joe Fatheree (@josephfatheree) of Effingham High School in Springfield, Georgia and Michael Soskil (@msoskil) of Wallenpaupack South Elementary School in Newfoundland, PA. The winner will be announced March 13.