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The Best Operations Security Propaganda Posters From World War II

“Loose tweets destroy fleets.” That’s the slogan of the United States Air Force’s latest operations security (OPSEC) campaign, and if the phrase sounds familiar, don’t be surprised. We collected 50 propaganda posters from World War II that show an age when keeping military secrets was a matter of life or death. » 8/27/15 3:35pm Thursday 3:35pm

Pruning the Mississippi River Could Protect New Orleans From the Next Katrina

When Hurricane Katrina devastated New Orleans a decade ago, its destructive power was unprecedented. But these days, extreme weather events are becoming eerily common. How to prevent the next big storm from walloping the Big Easy? We might need to let the mouth of the Mississippi die. » 8/25/15 2:00pm Tuesday 2:00pm

Inspired by Battleship, This Head-to-Head Portable Arcade Is a Work of Art

It’s probably about time for custom arcade builder Love Hultén to consider taking on the likes of Microsoft, Nintendo, and Sony. His custom arcade consoles are just stunning, and there isn’t a gamer out there who wouldn’t drop a small fortune on his new two-player Battlecade. » 8/24/15 11:30am Monday 11:30am

This Rotary Dial Smartphone Hack Fills Me With Glee

Rotary dials are one of my favorite UI devices. I like the force feedback they provide as you spin a number in, and the sound they make as the dial zips back into position. At last, I can have that feeling every time I make a call, using Polish engineer Paweł Zadrożniak’s crazy DiY rotary dial smartphone. » 8/20/15 1:55pm 8/20/15 1:55pm

The Incredible DiY Cabins of the Tisza River in Hungary

One of the strangest places in Hungary lies beside the Tisza River in a village called Gergelyiugornya. Hugged by a bend in the river, it’s a relatively narrow, woody flood basin area packed with small cottages that show an incredibly wide variety of architectural designs and creativity. Walk with me in the shade of… » 8/17/15 7:50pm 8/17/15 7:50pm

The U.S. Embassy in Havana Is a Perfect Metaphor for American Diplomacy

John Kerry watched a soldier hoist the American flag over the United States Embassy in Havana on Friday morning. He’s the first secretary of state to visit the land of Castro, communism, and cigars in 70 years. The embassy itself, an acclaimed example of midcentury modern architecture, has been rotting for just as… » 8/15/15 11:30am 8/15/15 11:30am

We Cannot Allow These Awful Sliding Airplane Seats to Become Real

It’s easy to think of ways we could improve airplane seat design. It takes some sick creativity to think of how we could make it worse, though. But the world is full of sick people—like these dudes from North Carolina who want to put airplane seats on wheels and control them with an iPad. » 8/14/15 3:50pm 8/14/15 3:50pm

A Gigantic Upgraded Lite-Brite With Color-Changing Dials Instead of Pegs

Hasbro’s Lite-Brite is one of those brilliantly simple toys that has stood the test of time. It doesn’t need an upgrade—at least that’s what we thought until we saw this giant Everbright board that replaces those colored plastic pegs with dials that can reproduce any color you can imagine. » 8/14/15 12:49pm 8/14/15 12:49pm

Watching the Numbers Flow on This Ferrofluid Clock Is Almost Therapeutic

Ferrofluid is a wonderful metallic goo that magically reacts to the presence of a magnetic field. To date it’s really only been used in mesmerizing desk toys, but Zelf Koelma has found a way to manipulate the material into an animated clock that perfectly represents the flow of time. » 8/12/15 5:50pm 8/12/15 5:50pm