Biology

As bird flu spreads in the US and worldwide, what’s the risk that it could start a human pandemic?
First healthy mice with two dads — and no moms — born in Japan
Here’s how your sleep affects your immune system
Oral bacteria trigger rheumatoid arthritis flare-ups
New MS treatment targets the gut microbiome
A new look at the strange case of the first gene-edited babies
New study discovers how to reverse hearing loss
How diet influences the conflict between cell “cooperators” and “cheaters”
Startup plants first GMO trees designed for carbon removal
Strange life forms create an “alien” ecosystem in an abandoned uranium mine