© Istockphoto| Sahel, Africa

© Istockphoto| Depressione della Dancalia, Etiopia  

© Istockphoto|Salar de Uyuni, Bolivia

© Istockphoto| Lago Bajkal, Siberia, Russia

© Istockphoto| Parco Nazionale delle Everglades, Florida 

© Istockphoto| Taiga siberiana 

© Istockphoto|Saline di Bonneville,  Utah

© Istockphoto| Parco del Delta del Po, Ravenna

© Istockphoto| Olanda 

© Istockphoto|  Pantanal, Brasile