Comments by "Arthur Mosel" (@arthurmosel808) on "Humans Used Boats to Reach Remote Islands 200,000 Years Ago | Ancient Mysteries" video.
-
1
-
@NeptunesLagoon Please check your data, sea level was around 400 feet lower about 17,000 years ago. There was still extensive glacierization at that point. The ice and land bridge from Siberia to Alaska existed at least at the beginning of this time. I do agree that further back there was even more ice in some past periods; however the Earth has cycled between hot and cold throughout eons. Check out the three orbital cycles, one of which has the Earth in an extremely elliptical orbit somewhere around every 100,000 years. There was a cartoon around in the 70's when the fear was of a new ice age; it featured an ant on a leaf floating down a river demanding the drawbridge be raised. Mankind believing that it can change/control the climate is equivalent to that ant's belief that the drawbridge needed to be raised for him. The climate will change whether we want it to or not. We have yet to identify all the causes of climate change; that is why none of the models have accurately predicted climate changes. I remember hearing Al Gore confidently predict all Arctic Ice would be gone a decade ago. I saw the satellite pictures of Arctic ice covered with dust from explosions used by Russia rerouting rivers to run to the north coast of Siberia trying to allow Siberia to warm. That dust actually allowed more melting of the ice;. Yes man can affect climate, however, the same ice melt disrupts the Gulf Stream that warms the North American Continent and Northern Europe and in around 500 years finally affects the Southern Hemisphere since the Gulf Stream is part of a world wide ocean system that is estimated to take 1,000 years for a complete cycle. Remember that around 1,000 AD or CE (they both use the same start point) Greenland 's coast included arable land well up is west coast. The Little Ice Age ended that, now that land is emerging again; the Little Ice Age ended in the the first decades of the 1800's (lets use around 1820). If a roughly 1000 yea r cycle is involved, we should be looking at being near the peak of the warming cycle. Just an aside geologists taking core samples inthe Great Plains found a decades long drought around every 500 year; this was verified by tree ring samples. That drought occurred near the point of the Little Ice Ages beginning. Instead of wasting time and money trying to prevent climate change, that effort needs to go into 0lznning to survive it.
1