Life is a fragile thing. It changes and adapts so specifically to survive in the environment it's placed in. This ability to adapt is called evolution, and it's the reason that life has endured for the past few billion...
The Chilling Tale of the Ordovician-Silurian Mass Extinction
The Strange Story of the Late Devonian Mass Extinction
How the Permian-Triassic Mass Extinction Almost Killed Life on Earth
How the Triassic-Jurassic Mass Extinction Gave Rise to the Dinosaurs
The K-Pg Mass Extinction: The Day the Dinosaurs Died