Cyanobacteria ingest carbon dioxide and release oxygen, and billions of years ago they began producing more oxygen than Earth's natural processes consumed, causing oxygen to build up in the atmosphere.
Sources
- Interesting facts about Earth from Harvard paleontologist (news.harvard.edu)
- https://www.planetary.org/articles/how-did-earth-get-its-oxygen (planetary.org)
- https://asm.org/articles/2022/february/the-great-oxidation-event-how-cyanobacteria-change (asm.org)
- https://www.whoi.edu/oceanus/feature/little-things-matter-a-lot/ (whoi.edu)
- https://www.scientificamerican.com/article/origin-of-oxygen-in-atmosphere/ (scientificamerican.com)
More in Science
- Aspect's 1982 result allowed for further validation of quantum entanglement and locality principles.
- Mean follow-up after vaccination was 16 months per participant in the Pfizer phase 3 RSV vaccine trial (median 17 months) and 19 months in the GSK phase 3 RSV vaccine trial (median 23 months).
- People who lived to ages 95–112 developed cancer, heart disease, diabetes, osteoporosis, and stroke up to 24 years later than people with average lifespans.
- Paleocoast models developed by specialists from the Patagonian Institute of Geology and Paleontology (IPGP-CONICET) indicate that 11,000 years ago the sea was located nine kilometers from the current coastline.
- Eight-legged mites can live on the human face, especially around the hairline, eye sockets, and eyelashes, where they mate, lay eggs, and hatch.
- In the Central Oregon Community College research seminar, student replication projects are reviewed by assessors both before and after data collection, are shared on a website, and exemplary studies are eligible for research badges.