sentences:  Justice Byron White wrote for a 7−2 majority of the Court that McKinney's claim that prison officials "have, with deliberate indifference, exposed him to levels of ETS [second hand smoke] that pose an unreasonable risk of serious damage to his future health" raised a valid claim under the Eighth Amendment.He wrote that McKinney would have to prove both the scientific facts of the dangers of exposure to second-hand smoke and prove that community standards supported him, that "it violates contemporary standards of decency to expose "anyone" unwillingly to such a risk.In other words, the prisoner must show that the risk of which he complains is not one that today's society chooses to tolerate."