The Mega Millions jackpot is at $636 million. A frenzy of ticket purchases is raising the possibility that the jackpot could top $1 billion by Christmas Eve. John explains the odds, and Tom and Ursula defend buying into the office pool. // Newly-elected city council member Kshama Sawant is calling for a $15 an hour minimum wage in Seattle by the end of 2014. A few dozen people in Seattle rallied Monday in solidarity with Amazon.com workers in Germany who walked off the job in protest of work conditions. // Edward Snowden wrote an open letter to Brazil Monday. He praises the country for its strong stand against U.S. spying, and he says he's willing to help Brazil investigate NSA spying if the country grants him asylum. // Letters.