From reading about climate change, I read that sea ice is reflective, which means some of the sunlight isn't absorbed, so it doesn't contribute to heat.
However, any photons reflected would cause the ice to gain momentum. This momentum would then push against the rest of the Earth, and wouldn't that just end up creating heat anyway?
I don't see why reflecting should be "good" for climate change. If anything it might cause double trouble. Say the light's momentum is p, then reflecting causes a delta of p - (-p) = 2p, whereas absorbing causes p - 0 = p.