The Pleistocene Era

The Pleistocene Era is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before the Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology.

[abisaijorgevegaperez]

Pleistocene is an epoch, not an era, cenozoic is the right era for the pleistocene epoch

[nyoodmono]

Interglacials happen because of the excentricity-milankovic cycle. The question why a whole ice age period like our cenozoic happens is answered by plate tectonics: antarctica moved back to the south pole, gaining its ice shield and become the decisive albedo factor. Unfortunatly in the english language the term 'ice age' goes for ice ages at different time scales: Era, Period, but also 'the last ice age' before our interglacial and even the 'little ice age' within this interglacial.

[HolographicCathawk]

The human population bottlenecks in this era...it wasn't just animals disappearing. It got down to less 1300 individuals that could breed due to the reduced genetic variation.

[bowdawgg]

Human activity has always had an impact on the ecosystem

[tallard]

The Pleistocene has not "ended"!! We still have glaciers on the planet!

[Gunrun]

The extinction was likely due to two asteroid impacts at the end of the pleistocene called the younger dryas event.

[tallard]

Panama Istmus closed around 3-3.5 MYA not 4.5 MYA

[TheLincolnrailsplitt]

"Remains an issue"🤮. How about "Remains contentious"?

[tallard]

The "Ice Age" = Pleistocene, which we are STILL in, it's 2.6 million years.
You are confusing "The Ice Age" and Glaciations/inter-glacials occur on a 100-120, 000 year cycle.
This has to be the least informative video on the topic on the entire internet.