The $50 sensor runs on two coin cell batteries so you don’t need a nearby power source for installation.

A complete home heating and cooling system built by hand this MR Cool installation shows how one builder adds comfort and efficiency with simple tools turning a regular house into a climate controlled ...

Policy is only as strong as the credibility of the data it rests on. In recent months, two failures in India’s environmental monitoring systems have raised disturbing questions of governance — Delhi’s ...

Forget keys! The top smart locks we've tested are secure, easy to install, and provide several convenient ways to control who can access your home and when. I'm PCMag's managing editor for consumer ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Kathryn Rath Kathryn Rath ...