A green orb could mean you have a spot on your camera lens, or they could be a message from the spirit realm.

Everyone spots orbs from time to time — in photos, videos, or even sometimes with the naked eye. And sure, sometimes it's dust, a light artifact, or a bug. But other times — particularly if you see it ...

Two students at the University of Munich have developed an Arduino-powered "personal energy orb" (PEO) designed to encourage users to go outside and exercise instead of spending excess time on the ...