Former Senator and Secretary of State John Kerry (D-Mass.) is launching a new bipartisan coalition of world leaders and celebrities to push for an active strategy against climate change on Sunday. Dubbed "World War Zero," the activist group's goal is to unite "unlikely allies with one common mission: making the world respond to the climate crisis the same way we mobilized to win World War II," according to its website. Headlining the group are former presidents Bill Clinton and Jimmy Carter, former governors Arnold Schwarzenegger and John Kasich, Leonardo DiCaprio, Sting and Ashton Kutcher, the New York Times reports. In...