Premise: it's a real bad thing and it's just you know i think it's so many of these bad things some little really don't contribute that much and some just insignificantly but uh you know i i heard something the other night that absolutely floored me i'm a i'm a i'm a space enthusiast and just absolutely uh am absolutely crazy about the solar you know and think that we ought to put as much money as we can possibly get into the to the space program and i found out the other night from an Australian scientist one of the most respected uh scientist in Australia that every time i the US shuttle goes up it dumps more than what is it a hundred tons of these fluorocarbons into the ozone layer it is probably responsible our US shuttle

Hypothesis: An Australian scientist said that the US shuttle emits a lot of fluorocarbons.
Relation: entailment