Open up the world of printing anywhere in the world with these portable printers from Canon, HP, Epson, and Kodak. By Brandt Ranj Updated Jun 18, 2025 3:10 PM EDT Add Popular Science (opens in a new ...

Spring-loaded plungers use a spring and a plunger (or ball tip) to exert a precise and repeatable force. They are a better option than having engineers cobble together an assembly that uses a simple, ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we earn a commission. Learn more. Harry Rabinowitz Tech Reporter If you want fresh, cool ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Dave Gershgorn Dave Gershgorn is a writer covering monitors, laptops, and ...

Having been a gigging musician, DJ, and karaoke provider for over 25 years, I’m well aware of the stress and anxiety many face when it comes to purchasing, transporting, and using the best portable PA ...