Studies warn of abrupt environmental effects of warming
Wednesday, December 4, 2013 - 00:31
in Earth & Climate
One report says sudden climate shifts could appear in years or decades and calls for an early warning system. Another says a widely accepted emissions cap is too high.Scientists sounded alarms Tuesday with a pair of studies challenging the idea that climate change is occurring gradually over the century and that its worst effects can be avoided by keeping emissions below a critical threshold.