A water leak from a crack in Stone Dam in the Kaibab National Forest near Ash Fork Arizona.

Oil pollution, venezuela. Lake maracaibo

Abandoned barrels of leaking waste oil on the tundra at Nome in Alaska, United States of America, North America

Old rotten felt on a leaking house roof

An oil leak in a car park

Abandoned barrels of leaking waste oil on the tundra at Nome in Alaska, United States of America, North America

Abandoned barrels of leaking waste oil and an oiled sea bird, on the tundra at Nome in Alaska, United States of America, North America

Abandoned barrels of leaking waste oil on the tundra at Nome in Alaska, United States of America, North America

Construction of the southern portion of the Keystone XL pipeline, environmentalists have opposed the pipeline because it will transport dirty tar sands oil from Alberta, contributing to global warming and raising the risk of pollution from pipeline leaks,

Lionesses (Panthera leo) are licking one another, Savuti, Chobe national park, Botswana, Africa