Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

Poppies, cornflowers and wild mustard flowering during La Fioritura (The Flowering) on the Piano Grande (Great Plain), Castelluccio, Umbria, Italy

Young adult bull southern elephant seal (Mirounga leonina) holding young pup's head underwater trying to kill it, South Georgia Island, Southern Ocean

Adult Grey-headed Albatross (Thalassarche chrysostoma) courtship display at Elsehul, South Georgia

Adult Grey-headed Albatross (Thalassarche chrysostoma) in flight near nesting site at Elsehul, South Georgia

Lava lizard (Microlophus spp) courtship behavior in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

A Mayan woman use natural dyes to color fabrics. Ixoq Ajkeem comunity, San Juan La Laguna, Solol√°, Guatemala. Santiago Atitlan, lake Atitlan, Guatemala.

Cologne's first EU GreenBuilding, new office tower of the Deutsche Krankenversicherung, German Health Insurance, Cologne, North Rhine-Westphalia, Germany, Europe

Cologne's first EU GreenBuilding, new office tower of the Deutsche Krankenversicherung, German Health Insurance, Cologne, North Rhine-Westphalia, Germany, Europe

Cologne's first EU GreenBuilding, new office tower of the Deutsche Krankenversicherung, German Health Insurance, Cologne, North Rhine-Westphalia, Germany, Europe