> Because of that they don't rise to the atmosphere

Funny choice of words. It reminded me of the classic sketch,

Interviewer: So what do you do to protect the environment in cases like this?

Bob Collins - Australian Senator: Well the ship was towed outside the environment.

Interviewer: Into another environment...?

Bob Collins - Australian Senator: No, no it's been towed beyond the environment, it's not in the environment.

Interviewer: No but from one environment to another environment...?

Bob Collins - Australian Senator: No it's been towed beyond the environment, it's not in an environment.