atmosphere
atomic
cable
chimney
climate
clouds
concrete
condensation
construction
contamination
cool
cooling
cylindrical
danger
dangerous
ecology
electric
electricity
emission
energy
environment
exhalation
fuel
generator
german
greenhouse
hazard
infrastructure
nuclear
oil
plant
pollution
power
production
radiation
radioactive
reactor
risk
smoke
smokestack
steam
structure
technology
thermal
tower
toxic
vapor
warming
waste
wire