Some People Use Urine (And Chemistry) to Whiten Their Teeth

There are people out there who use urine to whiten their teeth. I can tell you how it works. Only you can decide whether you think it's worth it. » 11/23/14 9:00am 11/23/14 9:00am

The Game-Changing Discovery of Synthetic Urine

Urine doesn't look particularly spectacular when it's sprinkled over a toilet seat, but in the 19th century, it was proof that organic life was truly special. Until a scientist came along and destroyed everyone's pee-based delusions of grandeur. » 7/29/14 10:43am 7/29/14 10:43am

A Field Guide To Understanding The Many Possible Colors Of Your Urine

We're accustomed to seeing urine as yellow, or, if we're extremely hydrated, clear. That doesn't mean that pee can't have all kinds of colors. Let's explore the biochemistry of making one's pee all the colors of the rainbow. » 6/26/14 7:20am 6/26/14 7:20am

A Scientific Guide To Surviving Summer

The first day of summer is fast approaching – will you be prepared for suntanning, swimming, and swarms of bugs? Here's our handy guide to surviving the sultriest of seasons, with SCIENCE. » 6/15/14 2:55pm 6/15/14 2:55pm

No, Your Urine Is Not Sterile

There's a widely held belief that urine, except in cases of kidney or urinary tract infections, is sterile. It's a myth that won't go away — but a recent study linking bacteria to the bladders of healthy women should finally put this tired notion to rest. » 5/20/14 1:40pm 5/20/14 1:40pm

Fin Whales Produce An Impressive Amount of Pee

Fact: Fin whales produce an average of 974 liters of urine each day. Let's put this in perspective. That's 487 2-liter bottles of Coke. If you had that much gas (257 gallons) you could completely fill twenty 2014 Ford Focuses, and still have a bit leftover. » 3/28/14 6:06pm 3/28/14 6:06pm

Human urine contains more than 3,000 distinct chemicals

Researchers from the University of Alberta have shown that urine is a far more complex concoction than we ever imagined. The new comprehensive study chronicles the presence of over 3,000 chemicals in human urine — which is 30 times more than previously known. » 9/09/13 8:45am 9/09/13 8:45am

Scientists grow teeth from human urine because why the hell not

A new study shows that stem cells extracted from urine can be turned into rudimentary tooth-like structures. Oh, and the researchers did so by growing the teeth inside the kidneys of mice. » 7/30/13 9:45am 7/30/13 9:45am

Does urinating on your hands eliminate callouses?

Athletes often insert a number of superstitious rituals into their everyday routine. One of the more bizarre rituals came to light in the past decade thanks to former Major League Baseball Moises Alou, who admitted to urinating on his hands to toughen his skin and eliminate calluses. While Alou is retired, the ritual… » 11/23/12 9:00am 11/23/12 9:00am

Urine flavor wheels helped doctors taste patients' pee centuries ago

Back in the day, the medical analysis of urine relied on, well, a doctor's five senses and superstition. But sometimes physicians needed a little extra help in divining the ramifications of some dubious tinkle. » 10/19/12 11:45am 10/19/12 11:45am

This Chinese turtle urinates through its mouth

The Chinese soft-shelled turtle looks like someone glued the snout of a pig onto the face of a fish, with the texture of a scrotum for good measure. But its bizarre appearance pales in comparison to an even more bizarre, and newly discovered, habit: it urinates through its mouth. » 10/11/12 7:05am 10/11/12 7:05am

So you need to drink your own urine

Perhaps you have been put on an impromptu space flight. Perhaps you're trapped with minimal supplies . . . in the Atacama Desert. Perhaps you're just bored and want to figure out how strong a stomach you have. Whatever your reasoning, learn about the right way to filter urine. » 5/05/12 10:00am 5/05/12 10:00am

Yup, it's time to start drinking urine

That's the recommendation from a new report by the US National Research Council, who say reclaimed waste water is needed as a necessary substitute for the dwindling supply of freshwater. What's more, reprocessed urine might actually be cleaner than freshwater. » 1/16/12 2:37pm 1/16/12 2:37pm

10 Ways Of Getting High That Are (Slightly) More Pleasant Than Krokodil

Yesterday we discussed the horrors of the Russian drug krokodil. This flesh-eating heroin-like substance may seem like the most nightmarish of all nightmares, but there are plenty of other toxic (and just plain grody) substances out there, ready to be consumed for no good reason. Here are 10 more intoxicating things… » 11/16/11 10:30am 11/16/11 10:30am

Urinating chimp uses awesomely disgusting strategy to get a snack

Some chimps and gorillas were given a long vertical tube with a peanut at the bottom. To reach the treat, the primates realized they had to add water to the tube...and one chimp came up with a uniquely gross solution. » 6/09/11 2:30pm 6/09/11 2:30pm

The astronaut pee from Discovery's last mission streaks toward Earth

I can't imagine a more moving tribute to the final flight of the space shuttle Discovery. This shooting star photographed on March 8 is almost certainly the waste water from Discovery...in other words, a whole lot of astronaut urine. » 3/14/11 10:55am 3/14/11 10:55am

Asparagus smell — wee progress

No question is too small for science, and there is a body of research devoted to determining the whos and hows of the asparagus smell of human urine. Here's a snapshot of said research. » 1/01/11 8:00am 1/01/11 8:00am

Urine could be the next big alternative energy source

A revolutionary new fuel cell could take in urine and produce electricity and clean water. It might sound silly, but a prototype already exists, and it could provide the unlikeliest possible solution to third world energy and clean water problems. » 8/22/10 2:10pm 8/22/10 2:10pm

Astronaut Urine Creates a Surprisingly Attractive Light Show

That's no comet. This photo, taken Wednesday night, actually shows a trail of urine and waste water streaming out of the shuttle Discovery. The waste froze upon release, then quickly sublimated into a sparkling, glowing vapor. [SpaceWeather via Yahoo!] » 9/14/09 9:30am 9/14/09 9:30am