for hundreds of millions of years. Mass extinctions are relatively rare events; however, isolated extinctions of species and clades are quite common,...

much of the 20th century, the study of mass extinctions was hampered by insufficient data. Mass extinctions, though acknowledged, were considered mysterious...

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

diversity across the globe. The extinctions during the Late Pleistocene are differentiated from previous extinctions by its extreme size bias towards...

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

It is also the greatest known mass extinction of insects. It is the greatest of the "Big Five" mass extinctions of the Phanerozoic. There is evidence...

Extinction Rebellion (abbreviated as XR) is a UK-founded global environmental movement, with the stated aim of using nonviolent civil disobedience to compel...

Attenuation coefficient, sometimes called "extinction coefficient" in meteorology or climatology Mass extinction coefficient, how strongly a substance absorbs...

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

catastrophic extinctions, but rather represented unrecognised gaps[clarification needed] in the record. As the possibility of extinction became more widely...