Jan Henric Buettner, lit by red lights against a dark curtain, grips the back of a large, transparent table ... is a Hamburg-born entrepreneur with a background in telecoms.

There’s a whole lot to admire in this project. The swing-out transparent OLED display is super slick, the electronics are housed on a single PCB, the back half of the grip is in fact a portable ...

Find Heart Transparent Background stock video, 4K footage, and other HD footage from iStock. Get higher quality Heart Transparent Background content, for less—All of our 4K video clips are the same ...

THE READER SURVEY IS NOW CLOSED. Results will be published in Garth’s follow-up post on March 25.

The normal resting heart rate varies by age. In adults, any number between 60 and 100 beats per minute (bpm) is considered a good resting heart rate. Babies and young children have higher resting ...