Dollar Tree sells the number balloons with helium for only $5. However, the size of these balloons are unclear. The Party City ones are 34 inches.

Balloons just got real. An element of the periodic table, helium is what chemists call an inert gas. Helium has an atomic number of 2. It's nontoxic, nonflammable, and is used in several ...

Macy’s did not respond to Gizmodo’s request for hard numbers.) A standard party balloon contains about 0.4 cubic feet of helium, so you’d need about 30,000 of them to approach the amount of ...

When helium filled balloons are handed out at public events, they usually come with a piece of string or ribbon attached. The attachment is either tied into the knot, or secured with a plastic disk.

And the use of helium to fill party balloons has been controversial; the gas is used in MRI machines, welding equipment, nuclear reactors, and scientific experiments.

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 ...

The presenter of the Royal Institution's 2012 Christmas Lectures, Peter Wothers, will use the series to argue against wasting valuable helium gas in party balloons.. In a number of lectures ...

Helium-filled balloons can float for up to several hours or days depending on the material. ... "Throughout those years, the total number of balloons we found was 118,887," she said.

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 ...