Mutations across species reveal clues to ageing
How long animals live is linked to how quickly their genetic code mutates, a study suggests.
Researchers discovered that mammals - from tigers to humans...
Covid-19 cases trend up again in the US, driven by the growth of BA.2
Covid-19 case numbers have begun to edge up in the United States, and nearly all of them are caused by the Omicron subvariant BA.2.
According...
Covid-19 ‘superspreading’ can still happen, but now we have the tools to slow it
A recent outbreak of Covid-19 cases among officials in Washington, with dozens testing positive after attending the Gridiron Club Dinner, has put the concept of...
Philadelphia becomes first major US city to reinstate its indoor mask mandate as cases rise
Philadelphia will reinstate indoor mask mandates Monday, April 18, as its Covid-19 cases quickly rise, the city's Public Health Commissioner Dr. Cheryl Bettigole announced Monday.
The city...
This invisible Covid-19 mitigation measure is finally getting the attention it deserves
Two-plus years into the Covid-19 pandemic, you probably know the basics of protection: vaccines, boosters, proper handwashing and masks. But one of the most...
