A modern over-the-counter pregnancy test is a tiny engineering marvel, combining a sensitive antibody-based detection system with enzyme-activated dyes to pick up minute amounts of hormone from the developing placenta. Check out the new video that describes how it works at Ted-Ed!
The Lycurgus Cup is a Roman goblet, recently found to make use of nanotechnology to change color. Know what else changes color? A pregnancy test! Amazingly, both of these objects use similar nanotechnology.
Nowadays, finding out if you're pregnant is relatively easy — but it wasn't always that way. Over the centuries, people have come up with downright strange and sometimes revolting tests to figure out whether or not a person is knocked up. Some of them were useless, some required being a chemist in the bathroom, and…