In ways we've looked at pollution in the past, coal has cleaned up. But the bigger problem we face now is carbon dioxide, which clean coal plants still emit.

The long-term lessened use of energy, which will cause less pollution in the production of that energy, is an ecological reason for using Eco-Blocks.

Fortunately, reducing light pollution is easy. Plus, it's good for national parks and good for America generally.

Ozone smog represents the single most challenging pollution problem the country is facing.

We know we've been in this situation before. It seems like it's been the same story for the past three years for me. It's kind of disappointing, but we're not going to hang our heads.

It's been pretty quiet for the past month. It's been painful, very emotional, knowing we were letting down our school and community by losing when we knew we could win.