AAP: The planet has been building up temperatures at the rate of four Hiroshima bombs of heat every second, and it's all our fault, say climate scientists.
Hurricane Katrina and superstorm Sandy are just two examples of how extreme weather will intensify, Australia's Climate Action Summit has heard.
Humans are emitting more carbon dioxide into the atmosphere than any other time in history, says John Cook, climate communication fellow from the Global Change Institute at the University of Queensland....