A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...

Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O ...

Rep. Alexandria Ocasio-Cortez (D-N.Y.) leads among young Democratic voters in a hypothetical 2028 presidential primary, according to a new survey. The Yale Youth Poll, released on Monday, shows Ocasio ...

The best ways to send money are fast, free or low in fees, and offer good options for sending and receiving funds. Many, or all, of the products featured on this page are from our advertising partners ...

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...