ग्रीनलैंड – आवारा मुसाफिर

Greenland’s massive ice sheet is melting — here’s how to save it

October 21, 2023798 Views

The ice sheet could experience runaway melting if the world overshoots climate targets, but even then quick action could stabilize it Greenland’s massive ice sheet, which is thawing because of human-induced climate change, could be saved from complete meltdown even if global temperatures soar past key international targets, a study suggests. But rescuing the ice in these conditions would require huge future cuts in atmospheric greenhouse-gas levels — and would not prevent the ice sheet from melting enough to cause up to several metres of sea-level rise. Melt water courses across the Greenland ice sheet, the largest ice mass in the Northern Hemisphere. Credit: Education Images/Universal Images Group via Getty Using climate modelling, the research concludes that Greenland’s melti...

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Oldest DNA reveals life in Greenland 2 million years ago

AWARA MUSAFIR BUREAU

December 9, 2022716 Views

Scientists discovered the oldest known DNA and used it to reveal what life was like 2 million years ago in the northern tip of Greenland. Today, it’s a barren Arctic desert, but back then it was a lush landscape of trees and vegetation with an array of animals, even the now extinct mastodon. “The study opens the door into a past that has basically been lost,” said lead author Kurt Kjær, a geologist and glacier expert at the University of Copenhagen. This illustration provided by researchers depicts Kap Kobenhavn, Greenland, two million years ago, when the temperature was significantly warmer than northernmost Greenland today. (Beth Zaiken via AP) With animal fossils hard to come by, the researchers extracted environmental DNA, also known as eDNA, from soil samples. This is the ge...