Helium can be used for a lot more than blowing up balloons
When you think of helium, you probably think of blowing up a bunch of balloons. But that's just the tip of the iceberg for ...
Australian Broadcasting Corporation5y
What happens to helium balloons when they float into the sky?
Cracker question because helium balloons are actually ... Now for this to happen, the balloons would have to come back down in fairly large chunks. These chunks would then have to either block ...
BBC5y
Helium balloons 'cause increasing number of train delays'
Helium-filled balloons have been blamed for causing hundreds of train delays for passengers across the UK each year. Network Rail wants to highlight what it says is a growing problem. The rail ...