Many people think green snot means you are really sick, or that you need antibiotics. Not true. Green snot is actually a sign that our immune system is working and that we are getting better.
Biologists are finding new evidence that these ocean invertebrate grazers don't just ingest whatever they catch. They can actually be picky eaters – and their choices might influence ocean food webs.
New parenthood got our fluid dynamics experts thinking about what ends up in the diaper. They headed to the zoo and the lab to come up with a cohesive physics story for how defecation works.