How To Use A Condiment To Get Away With Murder

We've all seen an intrepid investigator spray down a crime scene with luminol and turn off the light, and a seemingly innocent room glows blue, illuminated by the leftover traces of gore. This is usually a sign someone was horribly murdered in that room. But in reality it's also possible that they got into a food… » 3/04/15 6:20am Wednesday 6:20am

How Tourist Garbage Causes Yellowstone's Morning Glory To Change Color

Decades ago, the Morning Glory pool at Yellowstone National Park was a gorgeous deep blue. But because tourists have thrown coins, rocks, and trash into it for years, the spring has now turned into a sickly yellowish green. Now, a new optics study is shedding light on the pool's unfortunate change of color. » 2/11/15 1:20pm 2/11/15 1:20pm

Your Explanation Of The Explosive Sodium-In-Water Reaction Is Incomplete

Many of us gained our first appreciation for chemistry upon witnessing a high school teacher drop a chunk of sodium into a beakerful of water. You may think you know the explanation behind the explosive behavior that follows, but newly published research suggests there's more to the reaction than previously believed. » 2/07/15 8:30am 2/07/15 8:30am