This See-Through Combination Lock Unravels the Mystery of School Lockers

As you raced through your locker combination four or five times a day during high school, did you ever stop to wonder how those seemingly random rotations actually worked to protect your lunch and textbooks? The lock’s mysterious inner workings were always hidden away under a metal case, but this clear plastic replica…

The Secret Language of Ships

Approaching the container ship in San Francisco Bay, the tugboat looks like a pit bull puppy chasing an eighteen-wheeler. When the vessels are an arm’s length apart, the ship’s mate throws down a line. Now leashed to the ship, the tug can push and pull it around the bay. Big ships can’t easily slow down or maneuver by…

The 5 Strangest Westworld Theories That Could Still (Technically) Be True

The only thing better than Westworld itself are all the fan theories. Some have turned out to be true—others are, let’s say, a tad less plausible. In this latest video, I, io9 writer Beth Elderkin, and Gizmodo social editor Joe Tonelli share five of the weirdest fan theories that haven’t actually been disproven yet.

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Top GOP Lawmaker Says Internet 'Fast Lanes' Are Just Like Priority TSA Lines, and Who Doesn't Love Those?

If we’re being honest, the best thing about TSA Pre-Check isn’t that you spend $85 to keep your shoes on when you go through airport security. It’s that, for a brief moment, you get to be a Have, filing past the miserable Have Nots in the general security line. Sure, some of them might get to cut ahead in that line…

7 Free Online Tools to Rescue Your Photos Without Photoshop

Whether you’re sharing photos on Instagram or working on an art project, the quality of the final image matters. Even if you don’t have something like Photoshop installed, you can get your pictures looking their best with the help of some free, simple-to-use web apps—and we’ve picked out seven of the best for your…

This Video Streaming Breakthrough Could Lead to Smart Glasses You Might Actually Want to Wear

One of the many inconveniences that doomed wearable products like Google Glass and Snap’s Spectacles was the need to charge them every night. Streaming video and data requires a lot of power, and that takes a tremendous toll on a tiny battery. But engineers at the University of Washington say they’ve found a way to …