aerial birds eye view pan over poluted North Saskatchewan river at Rundel Park past an empty quiet pedesterian bridge by park homes during COVID-19 restriction where social distancing is practiced

high angle view bridge river homesrundel park edmonton canada environmental pollution view park stream homes scenery residential scene petrochemical industrial environment refinery pollution facility industry water outdoors nature no people chimney dirty emissions production ecology amazon river people factory contamination technology manufacturing power petroleum stack gas fuel oil gasoline trash energy chemical sample science scientist biologist bottles