Popular Mechanics

2 days ago | popularmechanics.com | Elana Spivack

In the deadly game Russian roulette, a player loads a gun with a single bullet, spins the cylinder to randomize the bullet’s position, and turns the potentially lethal weapon on their own self. But in a thought experiment known as quantum immortality, this fatal game has not one but two outcomes: The player both dies and survives. And no matter how many times the player repeats this process, they will always die and survive.

3 days ago | popularmechanics.com | Tim Newcomb

Ongoing archaeological work at the Ramesseum Temple at Luxor has resulted in a wealth of new finds. Crews discovered storage areas—which once kept oil, honey, and wine—that paint a new picture of what the site was originally used for. The remains of drawings and school toys also show that the temple complex included a school. The goings-on at Ramesseum Temple near Luxor, Egypt, were far more in-depth than experts believed possible.

5 days ago | popularmechanics.com | Danny Perez

Leatherman multitools were a thing of legend when I was a Boy Scout. Most of us just had a small pocket knife but if you had a Leatherman, you were the de facto most-prepared kid on the campout. Even if all you knew how to do was whittle a bar of soap with it, you still had everything one may need in the outdoors at your fingertips. The Boy Scout motto is "Be Prepared" so you can see how this was a big deal.

6 days ago | popularmechanics.com | David Dritsas

Sharpening your lawn mower’s blade is key to a good-looking lawn. A dull blade creates ragged edges on grass tips that can turn brown after a few days or invite fungi and disease. Keeping the mower blade in top shape is just as fundamental to lawn care as watering and fertilizing. And while you could take a lawn mower blade to be sharpened at the local hardware store, it really isn’t difficult or time consuming to do it yourself.

6 days ago | popularmechanics.com | Danielle Zickl

Laughing is something you do with virtually no thought. Your friend tells a funny joke? You chuckle and don’t think twice about it. And there’s a reason for the adage “laughter is the best medicine”—research shows it has plenty of benefits, like boosting your overall mood and reducing depression, anxiety, and stress. But sometimes, laughing can be dangerous. While it’s highly unlikely, laughing too hard could lead to negative effects in your body—including death.