Clathrate gun hypothesisW
Clathrate gun hypothesis
Cretaceous–Paleogene extinction eventW
Cretaceous–Paleogene extinction event
Extinction eventW
Extinction event
Gaia hypothesisW
Gaia hypothesis
Great Oxidation EventW
Great Oxidation Event
Kessler syndromeW
Kessler syndrome
Permian–Triassic extinction eventW
Permian–Triassic extinction event
Red rain in KeralaW
Red rain in Kerala