BOULDER, Colo., Oct. 2 (UPI) -- A U.S. study shows Arctic sea ice during this year's melting season plummeted to the lowest levels since satellite measurements began in 1979.
CAMBRIDGE, England, March 14 (UPI) -- Scientists, noting sea ice in the Arctic has failed to form for the second consecutive winter, fear global warming may be irreversible in polar areas.
BOULDER, Colo., Sept. 28 (UPI) -- Climatologists say this month will set a record minimum in the amount of Arctic sea ice cover and the ice shrinkage might quicken in the future.
BOULDER, Colo., Sept. 16 (UPI) -- Arctic ice melting may have accelerated to a "tipping point" that will produce a vicious cycle of melting and heating, said U.S. scientists say.
BOULDER, Colo., Nov. 7 (UPI) -- Earth appears to be losing its ice in virtually every form, from glacial peaks to the permafrost frozen deep below ground.