Not long after I began contributing to Hagerty eight years ago, I wrote a detailed four-part piece on electrical relays and how they work in cars. You can still find the articles here (Part I: Why We ...

May 2, 2025 — Researchers have created a hairlike device for long-term, non-invasive monitoring of the brain's electrical activity. The lightweight and flexible electrode attaches directly to ...

It's a bundle of nerves and cells that relays messages between your brain ... One procedure stimulates nerve cells in the brain by using magnetic fields. This is called transcranial magnetic ...