NEW: Sixty years later, researchers have analyzed the sediment of an abandoned arctic military base and made a major scientific discovery.
Previously, scientists reckoned that Greenland iced over some 2.5 million years ago, and has been that way since. In 2021, Bierman and his colleaguesthat it was actually ice-free sometime in the past million years. Now, they’ve dated the tundra ecosystem captured in the Camp Century core to a mere 416,000 years ago—so northwestern Greenland couldn’t have been locked in ice then.
Scientists also know that at that time, global temperatures were similar or slightly warmer than what they are today. However, back then atmospheric concentrations of planet-warming carbon dioxide were about 280 parts per million, compared to today’s 422 parts per million—which continues to skyrocket.
That melting could be incredibly perilous. The new study finds that the Greenland ice melt 400,000 years ago caused at least 5 feet of sea level rise, but perhaps as much as 20 feet. “These findings raise additional concern that we could be coming perilously close to the threshold for collapse of the Greenland ice sheet and massive additional sea level rise of a meter or more,” says University of Pennsylvania climate scientist Michael Mann, who wasn’t involved in the research.
South Africa Latest News, South Africa Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Sixty Is the New Fifty: Feeling Younger Than EverDo you feel younger than your age? It's a phenomenon called 'subjective age bias,' and it's on the rise. Here's why.
Read more »
Arctic becoming site of new Cold War, Florida congressman warnsOne lawmaker has offered a clear directive to those who protect America. That would be Rep. Carlos Gimenez, chairman of the Homeland Security subcommittee on Transportation and Maritime Security. The Florida Republican weighed in on the existing and future security threats in the Arctic region during a hearing Tuesday before the House Committee on Homeland Security.
Read more »
Bulldog, 10, tied to dumpster and abandoned with no note, water or bedding'It could have been because of her advanced age, the owner's financial situation, or if there could have been something else going on,' a rescuer told Newsweek.
Read more »
Paranormal Activity in Abandoned Mid-Orange Prison (PART 1)“When you are evil in life, you are evil in death,” warned Pam Crisci, of Ghost Hunts USA, outside the notorious Mid-Orange Correctional Facility in Warwick, New York. Here at this abandoned boys’ …
Read more »
‘Absolutely deplorable’: 8 puppies found abandoned with their mother at construction siteAnimal rescuers are working to save a mother dog and her puppies after they were found abandoned.
Read more »
Baby carried to safety by stray dog after being abandoned in trashThe miraculous rescue happened outside a municipal building in Lebanon’s northern city of Tripoli on Wednesday.
Read more »