How do you measure cephalopod intelligence? What is the largest cuttlefish? And other questions for a cephalopod scientist.
There’s still plenty we don’t know about the novel pathogen, but your immune system seems to learn how to fight off COVID-19.
A group of scientists are building a defense for parasites—and have put together a plan to conserve species.
Plus more science news for the week, including the chemical linked to Beirut’s explosions.