Wind turbine in motion against blue sky with moon
Bioscience research in a laboratory
Looking up at wind turbine next to a windmill
Colorado wind farm located on wheat field at sunset
Female operator walks through a wind farm at sunset
Technician conducts biomass energy research conducted in laboratory
Low angle view of electricity pylon against sky
Wind turbines in colorado against blue sky
View of colorado wind farm from an automobile side mirror
Scenic view of mountains against sky
Skier turning between trees and spraying powder
Biomass energy research conducted in laboratory
Wind turbines in field against cloudy blue sky with cattle
Colorado wind farm located on wheat field
Retreating glacier, akshayak pass, baffin island
Wind turbine farm against beautiful sky during sunset
Woodward fire burning in point reyes national park, headlights on road
Wind turbine against blue sky from low angle
Wind turbine low angle against cloudy blue sky
A wildifire burned ridge at sunset in the autumn.
One person walking through ayoloco glacier at sunset at iztaccihuatl
Wind turbine in motion against blue sky
Looking up at wind turbine against blue sky
Electric technician in wind farm transmission area
Natural gas plant structures against blue sky
Wind turbines in field against blue sky at dusk
Drilling on the north slope of alaska
Chemical sample taken at refinery
Wind turbine against a blue sky with a jet airplane passing overhead
Wind turbines in field against dusk sky with cattle
Looking up at wind turbine against a dusk blue sky with the moon
View of the skyline of riga from above late afternoon with warm light
View of gornergrat glacier melting in summer near zermatt
Ayoloco glacier at iztaccihuatl volcano in mexico
Alpine mountain scene reflecting in calm tarn
Commercial solar panel installation on roof
One person walks through the ayoloco glacier at iztaccihuatl volcano
A couple running down from the summit of iztaccihuatl volcano
Glacially fed moraine lake in akshayak pass, baffin island.
Texas oil pump, crude oil
Wind turbine in colorado against blue sky
Wind turbine in a field against blue sky
Locomotive mountain, glacier and alpine lake, b.c. canada.
Drilling for natural gas against blue sky
Popocatepetl volcano view from the summit of iztaccihuatl volcano
Wind turbine in field against blue sky
Electrical work onboard production platform construction
Low angle view of built structure against sky
Scenic view of lake against sky during sunset
Alpine meadow and mountains reflecting in lake.