If you live downstream from another city, you're probably already drinking treated wastewater, reports National Geographic. And engineers want you to drink even more of it -- not because they're sadistic, but because it's perfectly safe, and water is increasingly scarce.
Get Grist in Your Inbox
Insane cycling video will make you hold your breath for two minutes
Here’s a wind turbine you can toss in your purse
Why it’s a big deal that half of the Great Lakes are still covered in ice
If you were watching “Game of Thrones,” you missed Neil Tyson’s solution to global warming
Why you should be skeptical of Walmart’s cheap organic food