Building A Helium Raft! | MythBusters | Season 4 Episode 9 | Full Episode

The Mythbusters attempt to make a helium-filled raft fly! What will be the outcome? How much helium do they need? Using science as a tool, Hollywood special effects experts attempt to debunk rumours, urban legends and popular myths that have captivated the minds of many individuals. #MythBusters #FactOrFiction