The extinction symbol represents the threat of holocene extinction on Earth; a circle represents the planet and a stylised hourglass is a warning that...

hourglass, known as the extinction symbol, to serve as a warning that time is rapidly running out for many species. Extinction Rebellion has been criticised...

Human extinction is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact...

Holocene extinction, or Anthropocene extinction, is the ongoing extinction event caused by humans during the Holocene epoch. These extinctions span numerous...

Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the...

De-extinction (also known as resurrection biology, or species revivalism) is the process of generating an organism that either resembles or is an extinct...

mass extinctions of viable species. Kolbert uses the mastodon as a symbol for the idea that catastrophe is an important mechanism of extinction. The great...

though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area...

The Voluntary Human Extinction Movement (VHEMT) is an environmental movement that calls for all people to abstain from reproduction in order to cause the...

Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Triassic–Jurassic (Tr-J) extinction event...