This extinction is nicknamed "the Sixth Extinction". Ethiopia has many species listed as critically endangered, endangered, and vulnerable to global extinction. Others state that tropical rainforest deforestation is contributing to the ongoing Holocene mass extinction. This is a list of extinct languages sorted by their time of extinction. The species is considered of minimal concern for extinction. This is helpful for the conservation of species facing extinction. It established a list of species in danger of worldwide extinction. Macroevolution is driven by differences between species in origination and extinction rates. Ecosystems had recovered from the Permian extinction. Humanity now teeters on the brink of extinction. One of the main theories to the extinction is climate change. Groupthink is another occurrence that falls under the idea of extinction by instinct. The impact of mass extinction events varied widely. They also show that humanity was on the edge of extinction. It is also the only known mass extinction of insects.