The Download: embryo ethics, and reducing chatbot risks

October 21, 2025
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. The astonishing embryo models of Jacob Hanna Instead of relying on the same old recipe biology has followed for a billion years, give or take, stem-cell scientist Jacob Hanna is coaxing the beginnings…

New noninvasive endometriosis tests are on the rise

October 21, 2025
Shantana Hazel often thought her insides might fall out during menstruation. It took 14 years of stabbing pain before she ultimately received a diagnosis of endometriosis, an inflammatory disease where tissue similar to the uterine lining implants outside the uterus and bleeds with each cycle. The results can include painful periods and damaging scar tissue.…