John Kerry said further progress on controlling global emissions hinges on international cooperation, particularly between the US and China (Yui Mok/PA) Climate chaos will spread from across “the entire planet” and the world may already be past five irreversible tipping points, John Kerry has said. Speaking to the defence and climate change parliamentary select committee, the US special presidential envoy for climate warned of coral reef die-off, melting permafrost as well as melting sea ice in the Barents Sea and the Arctic and Antarctic. Tipping points are when the climate permanently changes the state of global phenomena, which then create...