British atheists have really stepped up their game recently, and have raised enough money to launch ads on London buses. The campaign, due to start in January, will be centered on the lines seen in mockup above: "There's probably no God. Now stop worrying and enjoy your life." Probably? Way to hedge your bets there. The posters are the work of a group called the British Humanist Association. Prominent atheist professor Richard Dawkins fans the flames by saying the ads "will make people think—and thinking is anathema to religion."