architecture
atmosphere
atomic
background
burning
chimney
coal
cooling
danger
ecology
electric
electrical
electricity
energy
environment
factory
fossil
fuel
fuels
gas
generator
global
industrial
industry
infrastructure
nuclear
oil
planet
plant
pollute
pollution
power
production
radiation
radioactive
reactor
reflection
resource
sky
smoke
smokestack
smoky
station
steam
technology
thermal
tower
toxic
warming up