New Delhi, May 30 -- Glaciers worldwide are far more vulnerable to global warming than scientists previously estimated, with potentially catastrophic consequences for billions who depend on glacier-fed water systems, according to new research published in the journal Science. The dangers from such climate crisis-linked change was evident on Wednesday. A massive rock and ice avalanche from Switzerland's Birch glacier thundered down a mountainside in Blatten, sending dust plumes skyward and coating the evacuated Alpine village with mud, according to a news report by AP. The comprehensive study reveals that only 24% of current glacier mass would survive if global temperatures rise by 2.7degC - the warming trajectory anticipated under existing ...