environmental
air
cancer
chimney
cloud
contamination
critical
culls
danger
dangerous
dirtiness
dump
ecology
energy
environment
factory
foulness
garbage
global
green
high
illegal
illicit
impurity
industrial
industry
litter
offal
plant
polluted
pollution
power
problem
refuse
rubbish
smog
smoke
smokestack
spoilage
station
tailing
trash
unhealthy
unlawful
warming
wastage
waste
wasteland