Oldest known sex chromosome emerged 248 million years ago in an octopus ancestor ( www.livescience.com )
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/cd/63/cd63e27666df4a4e1cb6659c1070642e3dcbef6d6a77ec8b7ffc1698acea4cd0.jpg)
cross-posted from: https://lemmy.ca/post/21700185...
For the first time, researchers have analyzed the impact of antibiotic use on the rise of treatment-resistant bacteria over the last 20 years in the UK and Norway. They show that while the increase in drug use has amplified the spread of superbugs, it is not the only driver....
(sans paywall courtesy of the only reason I have a bluesky account)