Cracker question because helium balloons are actually a pretty controversial topic. Some people argue that they are harmful to the environment because on returning to Earth, animals mistake them ...
the company fills a balloon with the finely ground remains and then inflates it with helium gas until its diameter reaches a size between 2 to 2.5 meters. It then releases it into the sky.
It will come from some of the numerous helium weather balloons set to be launched 100,000 ... of 80,000 feet in the stratosphere, where the sky is black and the curvature of the Earth is visible.
Helium-filled balloons have been blamed for ... has launched a campaign to ban the release of foil balloons, sky lanterns or anything with plastic string or ribbons attached.