"Seeing is believing," the founder of lab company Truvian told me. So I tried the tabletop blood testing device—which promises results in 30 minutes—for myself.

Should we all be concerned about our cortisol levels? I took a blood stress test and spoke with experts to find out.

Khalil Mack didn't need a lot of time after the Los Angeles Chargers' season ended to make a decision about his playing ...

Shutter lag and motion blur have been two big problems on Samsung cameras, but our tests show the Galaxy S25 has improved, if ...