ClimateWire: At the end of the last Ice Age 18,000 years ago, the Northern Hemisphere transitioned rapidly into a new climate state. Glaciers retreated and the world warmed, and by 11,500 years ago, the planet had entered the constant summer of today's Holocene Epoch.
Right before this shift, there may have been a warning sign that the planet was hitting a tipping point into a warmer state, finds a new study published yesterday in the journal Science.
The signal was this: Climate and temperature conditions...