1286799 1570R-102273
Water pouring into a drain
1286809 1570R-102283
Water pouring into a drain
1719383 1555R-307810
Windmill
2849005 1525R-102350
Travertine stone excavated from open mine quarry.
3084455 1555R-325824
Rooftop solar panels, Oakland, California
3084457 1555R-325827
Rooftop solar panel
3084459 1555R-325830
Solar panels
3084468 1555R-325834
Parabolic solar cell arrays
3084469 1555R-325835
Rooftop solar panel
3084474 1555R-325838
Wind turbines
3084476 1555R-325839
Solar panels
3084477 1555R-325841
Parabolic solar cell array
3084480 1555R-325842
Wind turbines
3084482 1555R-325844
Solar panel
3084485 1555R-325845
Parabolic solar cell arrays
3084489 1555R-325847
Solar panel
3084490 1555R-325848
Parabolic solar cell arrays
3084869 1555R-326221
Wind farm turbines and blue sky
3084870 1555R-326222
Wind farm turbine and blue sky
2217015 1612R-33271
Solar panels on roof
20390 1566-031031
Cork stripped from cork trees