I often can't see the sky clearly when it's needed. That time it's been raining the whole night through The one good thing about it, I've found http://solarstory.net/comets/. They have a live video feed from the outside of the International Space Station.
Pollution is a consequence of all life, though humans are uncommonly effective polluters. Environmental pollution is an inevitable result of economic development, then cleanup is a result of further economic development.