"Please don't buy them." Absolutely!An MRI scanner cannot function without around 2,000 litres of ultra-cold liquid helium keeping its magnets cool enough to work. But helium — a non-renewable element found deep within the Earth’s crust — is running low, leaving hospitals wondering how to plan for a future with a much scarcer supply.MRI scanners are essential, party balloons are not!
Gail Busza ● 28d