Balloon release
Balloon races
A balloon race or balloon flight contest is a competition wherein the competitors attempt to send balloons as far as possible. Postcards are attached to the balloons which are then released. The flight of the balloons cannot be influenced by the competitors. Instead, success in the contest is dependent on the wind conditions and on the location in which the balloon lands. The contest depends on the goodwill of passers-by to find the balloons and return the postcards. A prize may be awarded to the person whose balloon travels the furthest.
Opposition
A number of organisations (for example, in the United Kingdom, these include the Marine Conservation Society, the Royal Society for the Prevention of Cruelty to Animals, the Tidy Britain Group, the National Farmers Union and the RSPB) oppose balloon releases, because of the visual impact of the fallen, deflated balloons, and the risk of harm to wildlife and domestic animals which they pose.
For these reasons, balloon releases are prohibited in some jurisdictions.
Permissions
Within many countries written permission is often required from the relevant airspace regulatory authority. In the UK this would be the Civil Aviation Authority, for releases over a certain number of balloons.
References
Retrieved from : http://en.wikipedia.org/w/index.php?title=Balloon_release&oldid=408482316
