Some parts of the human brain shrink as the weather turns colder and days grow shorter. But don't panic — scientists have a few theories why. ...read more
The Pfizer-BioNTech COVID-19 vaccine is the agency’s fastest approval ever — here’s how it was accomplished without shortchanging safety standards. ...read more
The larvae of many marine creatures drift in the plankton, then settle to the seafloor and transform into adults. Bacteria often help the critters pick where to settle — and that may be just a snippet of a far more extensive conversation. ...read more