A century ago, Macy's introduced helium-filled balloons ... float when its handlers lost control of the 45-foot-tall inflatable toy soldier amid poor weather conditions. The woman appeared ...

Cracker question because helium balloons ... showed that these balloons degrade about as quickly as an oak leaf under similar conditions. But opponents argue that a balloon floating in the ocean ...

Current law allows the release of up to 10 helium-filled balloons in a 24-hour period. But critics say that the law is not ...

Securely tie helium-filled metallic balloons to a weight that is heavy enough to prevent them from floating away. Do not remove the weight until the balloons are deflated. Puncture and deflate ...

Dry, the balloon filled with helium weighs less than the surrounding air and will therefore float. Once sprayed, the water molecules will make the balloon heavier, causing it to sink to the ground.