In this video, I demonstrate two simple electrical methods for metal etching that serve as alternatives to traditional engraving, suitable for various metal restoration and modification projects.

Metal-organic frameworks (MOFs) are a class of crystalline materials that consist of coordination bonds between transition-metal cations and multidentate organic linkers. The structure of MOFs is ...

Editor's Note: January 29, 2026: We've checked to make sure that our recommendations are still available and competitively priced. We’re in the process of testing a new round of metal detectors to ...

Feb. 6, 2026 A new study reveals that chemicals used to replace ozone-damaging CFCs are now driving a surge in a persistent “forever chemical” worldwide. The pollutant, called trifluoroacetic acid, is ...

Fresh Air from WHYY, the Peabody Award-winning weekday magazine of contemporary arts and issues, is one of public radio's most popular programs. Hosted by Terry Gross and Tonya Mosley, the show ...

Air Methods Corp. provides air medical transportation services throughout the United States and design, manufacture, and install medical aircraft interiors and other aerospace and medical transport ...

Join Larry Mantle weekdays for lively and in-depth discussions of Los Angeles and Southern California news, politics, science, entertainment, the arts and more. More AirTalk at www.kpcc.org. February ...

Bad air quality can be detrimental to your lung health. But it can be hard to know exactly how bad it is, especially in your own home. Simply put, improved indoor air quality will help you breathe ...

Why are aeroplanes always this long, thin, pointy shape? Aaaah, so long and thin pointy objects travel through the air more easily than short and wide shapes? Hmmmm… You're right! Long thin pointed ...