air

airborne

and

atmosphere

blue

building

business

carbon

chemical

chimney

coal

collection

combustion

construction

cooling

dioxide

dirty

ecology

emissions

emitted

energy

entrained

environment

environmental

exhaust

factory

fuel

fume

fumes

gas

gases

generation

global

industrial

industry

into

liquid

manufacturing

mass

material

metal

mixed

nuclear

oil

otherwise

particulates

pipe

plant

power

production

pyrolysis

quantity

sky

smog

smoke

solid

stack

station

steam

structure

technology

that

the

together

tower

toxic

undergoes

vector

warming

when

white

with