More than 400,000 years ago, a warming period pushed Greenland's ice sheet past its limit and raised global sea levels up to 6 meters, according to new research. The results may give us a glimpse as to what may happen as a result of Greenland's current climate-induced melting dilemma.
Beneath the barren whiteness of Greenland, there lies a mysterious frozen underworld, which through its melting and refreezing process, may be speeding its ice flow to the sea.
Researchers have found evidence that ash from forest fires in the Northern Hemisphere is finding its way into snow-build across Greenland, causing vulnerability and melt of the Greenland ice sheet - which scientists once thought was caused by global climate change alone.
Greenland has more ice vulnerable to climate change than scientists once realized. Researchers have determined that the "shallow" glaciers that edge Greenland's coast actually stretch approximately five dozen miles inland - potentially contributing more to rising sea levels than previously thought.
Greenland is losing ice from part of its territory at an accelerating rate - faster than previously thought - suggesting that the icecap is growing increasingly unstable, according to a study in Nature Climate Change.
NASA is on a mission to find out what lies beneath the two-mile thick ice sheets in Greenland by sending in a remote-controlled, solar-powered robot called Grover.
In July this year, a huge chunk of iceberg that was twice the size of Manhattan had parted from Greenland's Petermann glacier. This event had signified a dramatic episode in the environment due to global warming or climate change and rise in ocean temperatures.