Dinosaur Extinction 101 | K-pg Extinction Event

How did volcanoes, an asteroid, climate change, and tectonic plates cause these once-great creatures to disappear from the face of the earth? I also explain how the birds and our mammalian ancestors survive this extinction event, called the Cretaceous-Paleogene extinction (K-Pg for short).

The dinosaur extinction happened about 66 million years ago and killed 70% of all species.