Riot breaks out in Paris as worldwide climate change rallies erupt

Hundreds of thousands of people have taken part in rallies around the world on Sunday, calling on leaders to halt climate change on the eve of a major conference in Paris. The nearly two-week conference comes more than two weeks after the Paris attacks. A state of emergency was imposed in France after the carnage, and marches have been banned. But violence quickly erupted between French riot police and a group of several hundred at a major square in Paris that was the site of a peaceful demonstration earlier. Police fired tear gas to disperse protesters throwing projectiles. An organizer of the rallies, Avaaz, said that early estimates of marchers around the globe show 570,000 people marched...