
Greenland's ice is melting from the bottom up -- and far faster than previously thought, study shows
CNN
"Unprecedented" rates of melting have been observed by scientists at the bottom of the ice sheet.
"Unprecedented" rates of melting have been observed at the bottom of the ice sheet, caused by huge quantities of meltwater falling down from the surface, according to the study published in the Proceedings of the National Academy of Sciences.
As the meltwater falls, its gravitational potential energy is converted to kinetic energy, which ultimately warms the water as it pools at the base of the ice sheet. In that process, the study found that the Greenland ice sheet produces more energy than the world's 10 largest hydroelectric dams combined.

Janet Mills and her allies are counting on a gender gap to narrow Platner’s wide lead ahead of the June 9 primary to decide who will face incumbent Republican Sen. Susan Collins. They are betting that the unfiltered style that has brought Platner widespread attention as someone who could help Democrats reach young men will backfire with women.

As a shrinking number of Transportation Security Administration agents work to keep hourslong security lines moving despite not being paid, President Donald Trump stepped into the fray Saturday, announcing he will send Immigration and Customs Enforcement officers to airports by Monday if Congress doesn’t agree to a plan to end the partial government shutdown.











