Add Yahoo as a preferred source to see more of our stories on Google. Anybody who played with Hot Wheels as kids (or adults) knows there’s a single holy grail to any track setup: the loop-the-loop.

A loop recorder is an implantable EKG monitoring device. It cannot detect heart attacks or strokes. However, it can help doctors diagnose certain heart conditions to determine suitable treatments. A ...

Anybody who played with Hot Wheels as kids (or adults) knows there’s a single holy grail to any track setup: the loop-the-loop. A.k.a. the loop-de-loop. Which means this new—potentially—Guinness World ...