Juergen Freund / Split level of solar powered gauge measuring sea temperature, West New Britain, Papua New Guinea, May 2010

David Woodfall / Aerial view of Fishlake, South Yorkshire with floods from River Don and coal-powered power station in the distance. November 2019.

David Woodfall / Aerial view of Fishlake, Yorkshire with floods from River Don and Drax coal-powered power station in the distance. November 2019.

Georgette Douwma / Solar-powered phyllodesmium (Phyllodesmium longicirrum) this species has evolved a symbiotic relationship with zooxanthellae. Lembeh Strait, North Sulawesi, Indonesia.

Franco Banfi / Scuba diver swimming from the main river to a branch powered by a spring with clearer water, Bonito, Mato Grosso do Sul, Brazil

Ashley Cooper / Solar powered water pump on a well in a refugee camp during drought, Shire River near Chikwawa. March 2015

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suburb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...