air pollution
blue
bridge
carbon dioxide
chimney
co2
coal
coal mine
coalfired
coalfired power station
dark
duisburg
dusk
electricity
energy
environment
environmental damage
evening
factory
fossil fuel
fuel
fumes
generation
global
global warming
industrial
industrial building
industry
long exposure
mine
night
night shot
pollution
power
power plant
power station
reflection
rhine
rhine river
river
ruhr
ruhr area
skyline
steam
steaming
tall
tower
warming
water
water pollution