Researchers mapped all 139,255 neurons in the brain of an adult fruit fly, which are linked by more than 50 million synapses. Tyler Sloan for FlyWire, Princeton University, (Dorkenwald, S. et al.
Do you compete with your family for the most uniquely decorated Christmas tree? If you do, be glad this London pediatrician isn’t part of the friendly competition—because you’d lose. He then printed ...