Ever wonder why your highlighters glow in the dark? How about glow sticks at a rave? Our world is full of glowing objects that awe us even into adulthood, and their existence is easily explained.
This is so cool! If you have freshly-cut white flowers and a vase of tonic water, you can make flowers that glow when they're under black light. We'll tell you how.
Nikola Tesla's ghostly face isn't the most significant part of this photograph. It's the light—emitted by a fluorescent light bulb of Tesla's own invention. It was taken in 1894, decades before fluorescent lights came into popular use.
Remember learning about America's "amber waves of grain?" Well, it turns out that the United States' bread basket—a.k.a., the Corn Belt—is even more productive than previously thought. In fact, during its growing season, it's the most productive land on Earth, according to new NASA data.
A week ago I urged you to light your house by setting nuts on fire. I was a fool! All you need to do is hit those nuts with a laser, and they'll glow all by themselves.
A little black light, some tonic water, and some Jell-O, and you can have a glowing dessert. It'll will be a treat for the tongue and the mind (mostly for the mind, though).
If your greatest problem with your silk clothes is that they don't look impressive enough under black light, you're in luck. Researchers in Japan have genetically engineered silkworms that spin silk that glows under fluorescent light.
When you think of fluorescence you think of terrible, garish paper or clothing. But plenty of fluorescence can be found in nature, and sometimes it can be used to check what's purely natural. You can start in your very own kitchen, with olive oil - make it glow like it's radioactive with this easy experiment.
Scientists at Clemson University have rigged an HP Deskjet 500 printer to make microscope slides full of living cells. It spits out a a special cell-packed ink from the printer's standard cartridge.
The beauty of microphotography is seeing the universe in an incredibly small space. There are strange creatures and startling vistas — like this 20x portrait of green lacewig larva, taken by Igor Siwanowicz of the Max Planck Institute of Neurobiology.
Between their pincers and poisonous stingers, you'd really think that scorpions are already more than scary enough for one species. But that still leaves their unearthly - and unexplained - ability to glow a strange blue color in ultraviolet light.
A team of US and UK scientists have invented a portable scanner that may be useful in the hunt for life on Mars. And it sounds a whole lot like a Star Trek tricorder: it uses a beam of ultraviolet laser light and detects fluorescence from organic molecules, so it works remotely and doesn't damage samples. Under…