Fossils from Underneath Greenland Rewrite History of Its Ice Sheet

Anybody that thinks any ice anywhere on this planet is "permanent" is simply not paying attention. The only question about ice is how long it has been there. Pretty much none of it pre-dates the current ice age.

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Greenland had a settled community and bishops From 1124 until 1378, when it was impossible to maintain because of increasing cold. It had been warmer then than today. Hoping that it might again become habitable, there were titular bishops until 1500.

Anton: Greenland might become habitable.... Me: (Begins checking real estate prices) Anton:... in the next thousand years. Me: aww

According to the graphic shown, the oldest ice would not be at the center of the sheet, but at the extreme edges. As the center presses down, the oldest ice is pressed outward before eventually calving into the ocean. *In case no one noticed, these records which show extreme climate fluctuations date back to before humans had invented internal combustion engines, factories, plastic, or even bronze. This is the planet as it is: ever changing.

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That's pretty cool, I had an oceanography teacher in college (~15 years ago) talk about shifting oceanic currents and how we had ice cores from greenland showing it used to be much warmer, as well as antarctica, I suppose these were the cores they were talking about. They were spitballing that oceanic currents are responsible for for the building and subsequent melting of ice sheets, as fresh water and salt water levels change in the ocean it also changes how heat is distributed around the planet. Basically the ice melts and causes a massive influx of fresh water, which causes colder salty water to sink which increases surface temperatures, then the fresh water is shut off which causes the colder salt water to mix with the upper layers of the ocean causing the planet to cool down and reform the ice sheets. Of course none of this was put on a test, or taught to us as fact, they were just very enthusiastic and trying to get us to look at the ocean as part of the bigger picture. They also talked about how our current continental layout is possibly why we have ice ages, as the collisions of North and South America, as well as Europe and Africa dramatically changed the flow of ocean currents. They were one of my favorite teachers lol.

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9:29 Oh no my worst nightmare... the proposed Istanbul Canal!! Never expected you here...

Contrary to popular belief, not all of Greenland is ice. There's even a forrest in the Qinngua Valley. Most of it ice to be sure, but the south is a little less harsh. There are even farms.

Anton kept referring to ice cores and showing images of ice cores, which is a bit misleading. The plant and insect material is actually in sediment (soil) at the bottom of the ice cores. To be fair, Anton did mention "till" at least twice - that is a term for sediment left behind by glaciers. I imagine it would be hard to find stock photos for the video to illustrate the portion of the ice cores the researchers were looking at.

I'm waiting for some frozen dinosaurs to be unearthed.

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Greenland certainly had a period where the Norse could settle at small strips of green land. Remains of them lived their much longer but integrated with Eskimo peoples and eventually mixed (just like Iceland has small traces of Eakimo DNA)

Greenland deserves continentlet status! Sounds better than continentoid I think.

I would think that during certain periods of the Milankovitch cycle, it would be possible for Greenland to be ice free. If the tilt away from the solar plane of Earths rotation was high, and the precession and eccentricity brought the Northern hemisphere Winter during a period where Earth was closer to the Sun, then it could be possible for the climate of Greenland to be mild enough that ice would not accumulate. During this time, however, it would be likely that conditions in Antarctica would be significantly colder, leading to much more sea ice there, so the effects of the melting of the Greenland ice sheet would be largely offset. If this were the case though, it would imply an ice free, or at least partially ice free Greenland much more frequently and more recently than currently accepted, given (current) the major period of the Milankovitch cycle of 100k years, though you d need to do some calculations to determine the period of conditions favorable to low/no ice on Greenland. Given that it requires the confluence of various factors with different frequencies, this occurrence may be seemingly irregular and could be absent for extended periods. Just as the Arctic used to be ice free and support much more plant life than it currently does, so too Antarctica used to be ice free, even to the extent of supporting rainforest type habitats. The current Ice Age we find ourselves in is not how things have always been, it's not necessarily how the Earth "should" be, and why some people seem to think that the climate of the mid 18th century (the end of the Little Ice Age) is some supposed ideal to aim for is bizarre to me.

I've watched too many science fiction and horror movies/TV. Be careful about what you dig up from the ice.