O-ring sealed and nitrogen purged, the Crossfire II delivers waterproof and fogproof performance ...

The 2-inch offset of this cantilever mount positions the scope in a forward location, allowing the correct eye relief and head placement. The cantilever ring mount positions the center of the ...

These days, most manufacturers make specialized scopes and rings designed specifically for handguns. They come in different sizes, magnifications, and accessories—but they all help shooters ...

and require special scopes to handle their recoil impulse. Standard caliber pre-charged pneumatics can be laser accurate, but need quality optics to realize this potential. Regardless of whether it’s ...

It’s hard to overshadow just how easy this scope is to build, use, and hack on. You really don’t need much in the way of parts, a protoboard will do, though you can also etch or order your own ...

The Ring Video Doorbell and Ring Plus offer similar basic features, including motion alerts, two-way talk, and night vision.

The engines that power our cars — even the smallest ones — are extremely heavy. While smaller engines like four-cylinders and ...

This mount costs $22, but at the time of writing, is much lower on Amazon, at $18. The Roam Bike Mount is another popular option for both motorcyclists and cyclists, known for its balance of ...

The stylish smart ring is equipped with sensors that track your breathing, heart rate, body temperature, sleep and activity. By Erin Lassner editor The ring connects with your smart phone to ...

Nature Sustainability publishes significant original research from a broad range of natural, social and engineering fields about sustainability, its policy dimensions and possible solutions.

We publish original research from all areas of the natural sciences, psychology, medicine and engineering. You can learn more about what we publish by browsing our specific scientific subject ...

Italy's Mount Etna has been putting on a show by blowing ... volcano leading to an unusual display of the so-called 'smoke rings'. The rings are made of gases and propelled by a circular vent ...