Holy cow, there's water on Mars!

An artist's rendition of the European Space Agency's Mars Express orbiting the Red Planet. Photo by AFP/Getty Images.

This is not a drill, Earthlings. It looks like our celestial neighbor has a big 'ol lake on it.

Er, maybe I should say, a big 'ol lake in it.

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Thanks for stopping by for Day 16 of Upworthy's 31 Days of Happiness Countdown! If this is your first visit, here's the gist: Each day between Dec. 1 and Dec. 31, we're sharing stories we hope will bring joy, smiles, and laughter into your life. It's been a challenging year, so why not end it on a high note? Check back tomorrow (or click the links at the bottom) for another installment!

Picking up trash isn't the most glamorous job, but it is an important one. In Baltimore's Inner Harbor, that effort is led by a wise-cracking, anthropomorphic, googly-eyed conveyor belt named Mr. Trash Wheel. At a time when America is gearing up to make coal smog its national bird and give oil companies unfettered access to public lands, it's hard not to feel a tiny twinge of hope that one city now sports a 16-foot-long floating dumpster whose job it is to eat litter. Not to mention, he's awesome.

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It's fun to make glittery holiday cards with the kids. Or without the kids. I don't know. Don't judge me.

But if you've ever worked with glitter, you know cleanup can be a mess. If it gets on your hands, it can take ages (or some fancy tricks) to wash it all off.

This is just my hand now. Photo from frankieleon/Flickr.

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Are you the type of person who is always waiting on someone in the shower, or are you the one holding everyone up with your epic shower songs? Either way, Elisabeth Buecher has the perfect shower curtain for you. The London-based artist created an inflatable shower curtain that fills soft spikes with air if the shower is on too long. After four minutes of running water, a sensor on the tap triggers an inflator for the spikes, and the bather is immediately reminded that it’s time to get out.

Buecher created the installation to raise awareness about water conservation.

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