You don’t see them much anymore, but there was a time when any hobbyist who dealt with RF probably had a grid dip meter. The ...

A portable biosensor developed at La Trobe University may allow rapid, on-site detection of toxic "forever chemicals" in ...

While it’s rare for commercial pilots to attempt to fly under the influence, a string of recent incidents has hit headlines. What do the rules say? Depends where you are in the world.