Feb. 10 (UPI) --For Valentine's Day, electric companies would love for everyone to heed a warning: Helium-filled foil balloons can cause power outages. Brightly colored helium balloons are sold as ...

Dubbed the Air_ray, it’s a balloon made of an aluminum-vaporised “PET foil”. Inflated with helium, the Air_ray’s propulsion system is a flapping wing drive. Each wing has alternating ...