Black clouds of smoke from industrial chimneys of factory emanate against orange sky with bright yellow sun in top right of screen

Aerial shot passing over large deforested area in the Amazon rainforest in Brazil, with white smoke rising from burning trees. Small fires and single trees can be seen through the clouds of smoke

Bright sun against dark orange sky with clouds of smoke emanating from factory seen in silhouette

Side view of stationary motor cars in traffic queue with cloud of white exhaust fumes wafting through, then cars move off

White fumes puff out of car exhaust pipe as car pulls away, fumes obscure view of tarmac

General view of line of cooling towers of power station with white smoke pouring out of chimneys and autumnal trees in foreground

Very long view of power station with white smoke from cooling towers on bright but cloudy day

White fumes puff out of car exhaust pipe then car drives off leaving white cloud behind it

Cooling tower of power station with white smoke pouring out of chimney and autumnal tree in foreground

Very close shot of rusty car exhaust pipe emitting fumes, motor car is in motion and exhaust is shaking, fumes blow over camera lens

Back view of line of wheels of stationary cars in traffic queue with white exhaust fumes puffing from side

Close view of top of chimney with black smoke billowing out against cloudy sky

General view of line of cooling towers of power station with white smoke pouring out of chimneys and autumnal trees in foreground

General view of smoking factory chimneys on skyline with bright sun shining in orange sky

Very bright sun with rays emanating from it against blue sky then camera pulls out to show general view of industrial factory emitting clouds of smoke

Top of chimney with black smoke billowing out against cloudy sky, then camera pulls out to show long factory chimney

General view of power station with white smoke billowing from cooling towers on bright and sunny day

Mid-view of power station with white smoke emanating from cooling towers on bright day

Silhouette of factory structures with smoke billowing in centre, seen against large full orange sun low in sky

Clouds of smoke billowing from two long chimneys positioned on left of screen against clear sky with rays of sunlight hitting chimney tops

Single smoking factory chimney seen on the horizon in the distance with trail of black smoke emanating over darkened skyline of town rooftops, the smoke passes over bright sun