Neon Luminance is a series by From the Lens, a San Francisco based photography studio, which features long exposures of glow sticks in waterfalls. The resulting images are very colorful and great examples of being creative and using long exposures to create colorful works of art.
Please if you do try to replicate anything like what you see below make an effort to clean up after yourself. One of the unwritten rules of nature photography is to leave everything you shoot as you saw it and in that case it means cleaning up after yourself. Glow Sticks can be very harmful to an ecosystem and thus it is very important to clean them up after you are done.
Anyways, checkout the images, I think that they are really neat. According to their website the images were created using everything from 30 second to 7 minute exposures. One thing they did to amplify the effect was to string several glow sticks together, an ingenious idea that really sold the look.