I’m really interested to hear his take now that White Sands has been confirmed. We have had humans in North America for at least 21,000 years. This changes everything.
Exactly. Also, the fact that massive floods are becoming more widely accepted around the time that there was a megafauna extinction. Trying to dismiss the fact that evidence of an asteroid impact in glacial fields would be slim to none, while, at the same time, chasing limited evidence of humans being the main reason that drove megafauna extinction is confusing to me... it's almost egotistical (in a species aspect).
@@b071dc0 human interaction and harvest has created a large impact on the efforts in megafauna extinction (we can compare this to the modern day bison population), although science has proven younger dryas to be true and caused by fresh water flooding which has ultimately been the answer to megafauna extinction. as much as i like to hear people talk about terrestrial impacts, there is slim evidence to prove, but critical thinking is important and keeps the mind wondering.
I agree that humans were NOT the reason megafauna went extinct. We have been hunting large animals forever, with firearms for hundreds of yrs. yet they still exist. @@keeganwatts1199
Thank you GJH and Dr Dr. Surovell. Excellent subject matter, along with showing the " detective work " in finding a "sight" and understanding what already has been found.
When mammoths are found frozen in tundra with bellies full of undigested grass I would say the human population had very little to do with their extinction. Yes you might be able to find 1 or 2 that died of human predation but there is no way that the small amount of humans that came through the land bridge killed off the mammoths and the bears and the saber tooth tigers and the dire wolves. There just were not enough humans to kill off all the megafauna in north and south America.
This is something that I have always pondered. The very low estimates of humans in the Americas at the time doesn’t correlate to wiping out all megafauna in such a short period of time.
Also, if humans were killing these large animals at such a high rate, wouldn't there be a correlating human population increase? These animals were not easy to kill and overkill makes no sense.
Personally I lean towards the combination of factors causing the megafauna extinction... Environmental pressures combined with human hunting and expansion. There probably never will be 1 clear answer and the answer probably isn't 1 particular event. How does a grassland feeder like Bison survive but others like horses, rhinos and mammoths go extinct if it was from 1 single event like a impact?
@@b071dc0 the Steppe Bison had similar body size compared to their present-day cousins except the ice age steppe bison had much larger horns. Bison latifrons, also known as the giant bison or long-horned bison went extinct in North America 20,000 - 30,000 years ago at the height of the last ice age.
My theory... All of these big critters were in kind of a no mans land for reasons like: saber tooth tigers, giant wolves, monstrous bears, on and on. I would not have wanted to drink from a stream for fear of beaver the size of a horse. Disaster strikes on a mammoth scale (Ah Ha!). I don't know what disaster! Then with the environment covered in 'stuff', man (scavenger/predator) can come in to a friendlier situation as clean up crew while also slaughtering what survivors were left. Glory days for humans. Now, knowing how much smarter we humans are (Burp! What?) today, we can look back and say, 'Tisk Tisk Naughty - look what they did'. Bologna! Look around you, it is a mental mind trap where present day people convince themselves they are better than That! We are worse!%
I’m really interested to hear his take now that White Sands has been confirmed. We have had humans in North America for at least 21,000 years. This changes everything.
Exactly. Also, the fact that massive floods are becoming more widely accepted around the time that there was a megafauna extinction. Trying to dismiss the fact that evidence of an asteroid impact in glacial fields would be slim to none, while, at the same time, chasing limited evidence of humans being the main reason that drove megafauna extinction is confusing to me... it's almost egotistical (in a species aspect).
@@b071dc0 human interaction and harvest has created a large impact on the efforts in megafauna extinction (we can compare this to the modern day bison population), although science has proven younger dryas to be true and caused by fresh water flooding which has ultimately been the answer to megafauna extinction. as much as i like to hear people talk about terrestrial impacts, there is slim evidence to prove, but critical thinking is important and keeps the mind wondering.
I agree that humans were NOT the reason megafauna went extinct. We have been hunting large animals forever, with firearms for hundreds of yrs. yet they still exist. @@keeganwatts1199
Really great talk. (and questions) Thank you for continuing to do this during this time and make the recordings publicly available.
Thank you GJH and Dr Dr. Surovell. Excellent subject matter, along with showing the " detective work " in finding a "sight" and understanding what already has been found.
Very informative, and intriguing talk. Thank You!
When mammoths are found frozen in tundra with bellies full of undigested grass I would say the human population had very little to do with their extinction. Yes you might be able to find 1 or 2 that died of human predation but there is no way that the small amount of humans that came through the land bridge killed off the mammoths and the bears and the saber tooth tigers and the dire wolves. There just were not enough humans to kill off all the megafauna in north and south America.
This is something that I have always pondered. The very low estimates of humans in the Americas at the time doesn’t correlate to wiping out all megafauna in such a short period of time.
Also, if humans were killing these large animals at such a high rate, wouldn't there be a correlating human population increase? These animals were not easy to kill and overkill makes no sense.
Great presentation. Thank you
Personally I lean towards the combination of factors causing the megafauna extinction... Environmental pressures combined with human hunting and expansion.
There probably never will be 1 clear answer and the answer probably isn't 1 particular event.
How does a grassland feeder like Bison survive but others like horses, rhinos and mammoths go extinct if it was from 1 single event like a impact?
Reproduction rates. Adaptability. Also, the Bison species that survived is the smallest of multiple Bison species that were in North America.
@@b071dc0 the Steppe Bison had similar body size compared to their present-day cousins except the ice age steppe bison had much larger horns.
Bison latifrons, also known as the giant bison or long-horned bison went extinct in North America 20,000 - 30,000 years ago at the height of the last ice age.
39:36 ish I see a human face on the side of the bead! please confirm.
My theory... All of these big critters were in kind of a no mans land for reasons like: saber tooth tigers, giant wolves, monstrous bears, on and on. I would not have wanted to drink from a stream for fear of beaver the size of a horse. Disaster strikes on a mammoth scale (Ah Ha!). I don't know what disaster! Then with the environment covered in 'stuff', man (scavenger/predator) can come in to a friendlier situation as clean up crew while also slaughtering what survivors were left. Glory days for humans. Now, knowing how much smarter we humans are (Burp! What?) today, we can look back and say, 'Tisk Tisk Naughty - look what they did'. Bologna! Look around you, it is a mental mind trap where present day people convince themselves they are better than That! We are worse!%
Go Badgers
Please learn not to mumble.
smoker? voice raspy.