Vinegar eel "flash mob" caught under the microscope! Researchers were stunned when they measured the force of the roiling worm swarm.

In this quick classroom challenge, I put three mystery animal specimens under my digital microscope and let you guess what they are. The only hint I give is that they all start with the letter S.

Researchers developed a tiny, lightweight microscope that captures the electrical spikes of neurons at hundreds of frames per second in awake animals. WASHINGTON — Researchers have built a tiny, ...