In the mid-1670s, Johannes Swammerdam, a Dutch biologist, peered through his microscope at a honeybee's brain and drew what ...

An oscilloscope makes the invisible world of electricity visible, letting you observe electrical signals on a video display ...

Timelapse of Ph.D. student Aubrey Keirnan mounting a serially sectioned bird brain onto slides so that they can be measured and analyzed under a microscope at the Iwaniuk lab in Canada.