Francisco PizarroNov. 15, 1533: Francisco Pizarro (at right) and his small band of conquistadores arrive at the Incan capital of Cuzco, in modern-day Peru, to complete his conquest of the Incan Empire.  Pizarro fails to find the gold that was the main object of his conquest, and he is killed in a coup eight years later.

Nov. 15, 1973: The Quebec Association of Indians, a coalition of Cree and other native groups, secures a court order to block construction of a massive hydroelectric project that would flood portions of their homeland near James Bay, Canada.

Nov. 15, 1990:  U.S. President George H.W. Bush signs key amendments to the Clean Air Act, sharply reducing acid rain emissions and limiting other toxics in air pollution.

Nov. 15, 2012:  Bankrupt and facing lawsuits alleging environmental damage, Patriot Coal Corporation becomes the first major coal firm to pledge to phase out mountaintop removal mining in the Appalachians.

Photo: Wikimedia Commons

This feature is compiled by Peter Dykstra, an MNN contributor and publisher of Environmental Health News and The Daily Climate.

The opinions expressed by MNN Bloggers and those providing comments are theirs alone, and do not reflect the opinions of While we have reviewed their content to make sure it complies with our Terms and Conditions, MNN is not responsible for the accuracy of any of their information.