The United States and Iran may no longer be in active conflict, having established and then extended a cease-fire in their weekslong war, but the list of economic disruptions and industrial shortages continues to grow— oil , natural gas , jet fuel , tungsten , sulfur , fertilizer . Adding to that list is an often overlooked, but no less important, industrial input: helium. You may know helium as the gas that keeps party balloons afloat and pumps voices to new heights , but the gas has farther-