An Experimental Peptide Could Block Covid-19
MIT chemists are testing a protein fragment that may inhibit coronaviruses’ ability to enter human lung cells.
Day: March 29, 2020
In Earth’s Largest Extinction, Land Animal Die-offs Began Long Before Marine Extinction
The mass extinction at the end of the Permian Period 252 million years ago — one of the great turnovers of life on Earth — appears to have played out differently and at different times on land and in the sea, according to newly redated fossils beds from South Africa and Australia.