The research team found that the evolutionary changes in venom in three different geographic locations occurred around the same time that early humans appeared in the fossil record in those areas.
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- https://www.bangor.ac.uk/news/2021-01-20-spitting-cobra-venom-reveals-how-evolution-will-often-find-the-same-answer-to-a (bangor.ac.uk)
- https://www.science.org/doi/10.1126/science.abb9303 (science.org)
- https://news.cornell.edu/stories/2021/01/study-did-cobras-first-spit-venom-scare-pre-humans (news.cornell.edu)
- https://theconversation.com/spitting-cobras-may-have-evolved-unique-venom-to-defend-from-ancient-humans-153570 (theconversation.com)
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