Live
- Gurinder Chadha all set to make a comeback to big screen
- Palle Sindhura Reddy flays YS Jagan during election campaign in Puttaparthi
- KK Raju files nomination amid public celebrations and predicts victory with 45k vote majority
- Vijayawada Central Candidate Vellampally Srinivas Campaigns in 28th Division Railway Colony
- DCA busts three quack clinics in Hyd, Jangaon and Mahabubnagar
- Man threatens to jump into lake if he doesn’t get divorced from his wife
- Vikram’s ‘Veera Dheera Sooran’ teaser: Laden with mass elements
- Tamil Nadu records 40.05 pc voting till 1 pm
- Sithara Entertainments announces ‘MAD Square;’ pooja ceremony held
- Google Unifies Hardware and Software Teams for Advanced AI Development
A whiff from blue green algae responsible for Earth's oxygen?
Highlights
According to a recent study, a whiff from blue-green algae was likely responsible for the Earth\'s oxygen.
Washington D.C: According to a recent study, a whiff from blue-green algae was likely responsible for the Earth's oxygen. Earth's oxygen-rich atmosphere emerged in whiffs from a kind of blue-green algae in shallow oceans around 2.5 billion years ago, according to the study from Canadian and US scientists.
These whiffs of oxygen likely happened in the following 100 million years, changing the levels of oxygen in Earth's atmosphere until enough accumulated to create a permanently oxygenated atmosphere around 2.4 billion years ago - a transition widely known as the Great Oxidation Event.
The onset of Earth's surface oxygenation was likely a complex process characterized by multiple whiffs of oxygen until a tipping point was crossed, said Brian Kendall of the University of Waterloo. "Until now, we haven't been able to tell whether oxygen concentrations 2.5 billion years ago were stable or not. These new data provide a much more conclusive answer to that question."
The study is published in Science Advances.
Next Story
ADVERTISEMENT
