I'm not clear what you mean. While nuclear waste is certainly a thing that could hurt the environment if mismanaged, impacting the climate isn't really a way that it does so. The shielding also seems like an unusual thing to focus on as opposed to the waste itself.
'shielding', is applied to both the energy extraction process of fission activity AND the remnants.
you're definitely not clear on the meaning.
Yeah, I'm definitely not clear on what you're trying to mean. How about you actually state your point rather than vaguely alluding to something?