environmental
air
blaze
burning
cloud
coal
contemporary
damage
ecology
economy
energy
environment
factory
field
fire
flame
flare
fossil
fuel
gas
gasoline
global
hazard
heat
high
industrial
industry
inferno
natural
nature
norway
oil
petrochemical
petroleum
pipeline
plant
pollution
power
price
recession
refinery
sky
smog
stack
torch
toxic
tube
urban
warming