big
blue
building
business
chimney
climate
cloud
coal
condensation
construction
cooling
danger
day
ecology
electric
electricity
energy
environment
factory
fuel
gas
global
heat
huge
industrial
industry
infrastructure
large
modern
nuclear
pipe
plant
pollute
pollution
power
production
sky
smog
smoke
stack
station
steam
summer
technology
thermal
tower
toxic
vapor
white