Nature World: Scientists have long been concerned that global warming may push the Earth's climate system past a "tipping point," and a new study from Oregon State University (OSU) may have finally identified that threshold.
According to the research, synchronization of climate variability in the North Pacific and North Atlantic Oceans is that tipping point - where rapid melting of ice and further warming may become irreversible. This is what happened a few hundred years before the rapid warming that took place...