Edited sentence: However just because the film presents the climate changing for natural reasons doesn't mean that it undermines the narrative of human-induced climate change.It's not like all climate change in Earth's history, or even the past 100 thousand years, is due to humans, especially at the end of the Ice Age when it got warm again.Presenting a period of climate change at the end of the ice age does not undermine that thousands of years later, after the humans industrialized and increased in population, the climate change then could be caused by human activity