Sea turtles and other marine animals can often confuse burst balloons floating in the ... to have biodegradable helium balloons but this year we have gotten away from that. I want to ban all ...

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 ...

They're floating away. Floating away? But how? Did you ever wonder why hot air balloons float? You may already have some ideas. Think about them and then choose one of the options below that seems ...