According to the estimates of University of Copenhagen scientist Per Gundersen, we would be doing the environment a great service if we just left it alone.
Even our most renowned woody species are in serious jeopardy, from soaring coastal redwoods to dinosaur-era Wollemi pines and firs that form the perfect Christmas trees.
Marine anoxia, or a decline in dissolved oxygen in the water, is one of the repercussions of global warming.
Melting ice caps bring freshwater onto the ocean surface, obstructing deep water circulation and cutting off oxygen supplies. Marine life dies in the absence of oxygen