Fish-inspired sensor tracks how human heart tissue responds to disease and treatment

Engineers have developed a new way to monitor how tiny lab-grown human heart tissues beat—by effectively "listening" to the ...

Here’s how the AirPods’ heart rate sensor fares against Apple Watch and other wearables

One of the flagship additions to the AirPods Pro 3 was a built-in heart-rate sensor, which allows users to track more than 50 workout types. But how accurate is it?
Cars and Horsepower

You've Been Checking Your Oil Wrong Your Whole Life—Here's How to Actually Do It Right

Pulling the dipstick is easy. Reading it correctly is another story. Here's when to check, how to read the markings, and what ...