Natural existential risk
Cotton-Barratt, Owen et al. (2016) Global catastrophic risks 2016, Annual Report, Global Challenges Foundation/Global Priorities Project.
A report focusing on natural catastrophic risks, as well as other types of global catastrophic risk.
A Naturalnatural existential risksrisk areis an existential risksrisk arising from natural processes rather than from intentional or accidental human activity.
Cotton-Barratt, Owen et al. (2016) Global catastrophic risks 2016, Annual Report, Global Challenges Foundation/Global Priorities Project.
A report focusing on natural catastrophic risks, as well as other types of global catastrophic risk.
Further readingBibliography
Cotton-Barratt, Owen et al. 2016. (2016) Global catastrophic risks 2016., Global Challenges Foundation/Global Priorities Project.
A report focusing on natural catastrophic risks, as well as other types of global catastrophic risk.
Underlying natural phenomena have been causing extinction on earth since life began. Asteroid collisions can result in mass extinction by causing particulate matter to block out sunlight and disrupt plant life for several years. Super-volcanoes can cause similar harm to agriculture. More exotic cosmological phenomena, like gamma-ray bursts, are conjectured to pose a natural existential risk.
We have a fairly good sense of the frequency of such risks, because of the historical record. As a consequence, we can estimate that they are relatively unlikely to cause human extinction in any given century. For this reason, it is generally believed that anthropogenic existential risks pose a more serious threat than do natural risks.
Further reading
Cotton-Barratt, Owen et al. 2016. Global catastrophic risks.
A report focusing on natural catastrophic risks, as well as other types of global catastrophic risk.
Natural existential risks are existential risks arising from natural processes rather than intentional or accidental human activity.
BibliographyFurther readingSnyder-Beattie, Andrew, Toby Ord & Michael B. Bonsall (2019) An upper bound for the background rate of human extinction, Scientific Reports, vol. 9, pp. 1–9.