Special cells in the retina split light into different colors to enable sharp vision during the day without harming night vision. Those long and tubelike cells, called Müller cells, snake through the ...

Sometimes a scientist needs to figure out what is in a certain mixture of substances. One way they can do this is to use a process called chromatography. In the activity below, you can try ...

You notice it first as a small gap between your nail and the pink skin underneath. What starts as a barely visible separation gradually expands, creating an unsettling space where debris collects and ...

Engineers are turning what used to be a bulky optics bench into something that fits on the tip of a finger, and the latest photonic chips go a step further by splitting a single laser into a ...