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