For nearly the first half of Earth's history, the planet's air and oceans were essentially oxygen-free.
Sources
- Interesting facts about Earth from Harvard paleontologist (news.harvard.edu)
- https://www.sci.news/othersciences/geoscience/great-oxidation-event-13012.html (sci.news)
- https://www.science.org/content/article/what-triggered-one-most-dramatic-changes-earth-s-history (science.org)
- https://www.whoi.edu/press-room/news-release/ocean-oxygenation/ (whoi.edu)
More in Science
- The SeaFlow dataset provides continuous shipboard observations of phytoplankton smaller than 5 micrometers in equivalent spherical diameter.
- The FDA says more than 18.5 million people in the U.S. aged 12 or older smoke menthol cigarettes.
- Grzegorz Niedźwiedzki of Warsaw University co-authored a study on 395-million-year-old tetrapod footprints found in Poland.
- In the meta-analysis, every additional 48 grams of whole grains consumed per day was associated with reductions in body weight, waist circumference, total cholesterol, and interleukin-6 (IL-6).
- Abiogenesis is the natural process by which life arises from non-living matter, such as simple organic compounds.
- Blood-vessel remnants were discovered inside a fossilized rib of 'Scotty,' a Tyrannosaurus rex skeleton that was more than 40 feet long and weighed almost 10 tons when alive.