Have you ever wondered how home pregnancy tests work? The sudden appearance of a plus sign or second pink line can seem downright magical. What kind of sorcery is this? How does it know? In reality, ...

Getting a pregnancy test can sometimes feel intimidating. Maybe you aren't totally comfortable going to your local drugstore and buying a test, or you're worried somebody will see it if it comes ...

Over one million people have watched the YouTube video. Shot from above, viral recipe video style, a disembodied hand pours bleach into two cups of human pee. They both begin to fizz, but one fizzes ...