smiley ball

air alarm alert atmosphere attention breathing building cancer carbon care chemicals chimney city civilization clean climate cloud contamination damage danger destruction dirt dirty disaster earth eco ecology emission energy envenom environment factory fear fresh future gas global graphic green health hope human ill illness image industrial industry life muck nature negligence ozone panic pestilent planet plant pollution power problem protection reek refinery responsibility ruin sky smiley smilies smog smoke smokestacks sphere stink symbol toxic venom warning