Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
air alarm alert apprehend atmosphere breathing bright carbon care chemicals chimney choice city civilization clean cloud contamination danger destruction dioxide dirt dirty disaster earth eco ecologic ecological ecology energy environment factory fear frightening future global gray green grey health hope ill illness image industrial industry life nature ozone panic planet plant poison polluting pollution power problem protection recovery recycle rescue responsibility rubbish sky smiley smilies smoke solution sphere stack sun sunny symbol toxic warming warning