An asteroid crashes into the Earth during the time of the dinosaurs, creating a giant explosion that affects the entire planet. The narrator explains that the asteroid is 6 miles wide and strikes the earth with an impact equivalent to that of 10,000 nuclear weapons. A trillion tons of dirt and rock are thrown into the atmosphere, blocking out the sun for years.
This clip provides an overview of dinosaurs, including when they were roaming the Earth and the two main groups that descended from the Archosaurs. It also describes what they ate and how they behaved. This clip then offers some surprising facts about their extinction.
The group comes across a tablet, and Buck explains what it means. He states that it tells the story of several "cosmic cleansings" every 100 million years or so. He warns that another event is coming soon that will wipe out all mammals.
A.O. Neville orders the separation of three half-caste girls, Molly, Gracie, and Daisy, from their parents as part of the 1905 Aboriginal Act. This act institutionalized racism and confined Aboriginal people in camps until their race became extinct. Regarding the aboriginal children, the goal was to assimilate them into white culture and train them to be domestic servants over time.
From human hands to now-extinct animals, cave art gives us a glimpse into prehistoric life. Who created cave art, and what was its initial purpose? Explore the paintings of Chauvet-Pont d'Arc and Lascaux Grotto, and learn what prehistoric art can tell us about our world thousands of years ago.