Toggle Dropdown
Announcements
Projects
Welcome guest
Log in
Loading
Loading...
https://www.livescience.com/1st-mass-extinction-oxygen-drop
0
0
Scientists just found a hidden 6th mass extinction in Earth's ancient past - Livescience.com
+ 112 more
11/15/22 at 12:00pm
Organization
Live Science
Author
Joshua A. Krisch
Details
37 words
Summarize
Science
People & Society
Earth
A global drop in oxygen levels about 550 million years ago led to Earth's first known mass extinction, new evidence suggests.
Show more
Create an account
or
login
to join the discussion
Modal title
...
Profile
Loading profile
Loading...