Some fishing methods, such as the use of nets, kill a large number of dolphins every year.

La Paz, Bolivia has an average annual temperature below 50 degrees Fahrenheit. However, it has never recorded a zero-degree temperature. Same for Stanley, Falkland Islands and Punta Arenas, Chile.

Erosion at the base of Niagara Falls (USA) undermines the shale cliffs and as a result, the falls have receded approximately 7 miles over the last 10,000 years.

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