air

brazil

brazilian

building

business

cane

chemical

chimney

chimneys

climate

closeup

coal

contamination

dioxide

dirty

ecology

electricity

energy

environment

equipment

este

ethanol

factory

filme

fuel

gas

global

heat

industrial

industry

machine

metal

meu

oil

paulo

pipe

plant

pollution

power

process

production

refinery

sao

sky

smog

smoke

smoked

sobre

station

steam

steel

sugar

tank

technology

tower

warming