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Sixth Mass extinction
June 10 , 2020
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- The ongoing sixth mass extinction may be one of the most serious environmental threats to the persistence of civilisation.
- This research was published in the journal Proceedings of the National Academy of Sciences of the United States of America (PNAS).
- Mass extinction refers to a substantial increase in the degree of extinction or when the Earth loses more than three-quarters of its species in a geologically short period of time.
- So far, during the entire history of the Earth, there have been five mass extinctions.
- The five mass extinctions that took place in the last 450 million years have led to the destruction of 70-95 per cent of the species of plants, animals and microorganisms that existed earlier.
- The sixth one, which is ongoing, is referred to as the Anthropocene extinction.
- Researchers have described it as the “most serious environmental problem” since the loss of species will be permanent.
- The loss of species has been occurring since human ancestors developed agriculture over 11,000 years ago.
- Tropical regions have seen the highest number of declining species.
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