PCWorld explains how to create an affordable CO2 air quality monitor using a Raspberry Pi and MH-Z19C sensor for under $40. This DIY project helps monitor indoor air quality since high CO2 levels ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The Smith & Wesson Schofield revolver ...

Daniel Defense's pistol-caliber carbine, the DDPCC, offers AR-15-style operation in a more budget-friendly caliber.

On October 26, 1881, shots rang out at the O.K. Corral. Within the first 30 seconds of the shootout, three members of the Clanton gang were killed. Men on both sides, including Wyatt Earp, Doc ...

Wastes generated in shielded hot cells containing materials contaminated with transuranic (TRU) waste present unique problems in waste disposal at Department of Energy (DOE) sites. Reduction of the ...