Helium, or commonly known as the gas that fills cheap party balloons and makes your voice squeak if you inhale it. But it is also actually a precious resource (non-renewable) that is being squandered with earth's reserves of it due to run out within 25-30 years.
Helium is also widely used in cooling down MRI scanners at hospitals, cool nuclear reactors and space telescope by NASA.
Helium is formed through the slow radioactive decay of rocks on Earth and nearly all of our reserves have been formed as a by-product of the extraction of natural gas.
in the near future, this balloon might cost u USD 100...... O.O