At the first congress of UNESCO in 1948, multiple governments, international organizations and national nature conservation groups agreed to form the International Union for the Protection of Nature or IUCN, which would later shed light on the dangers of sprawl, over-fishing and deforestation. Though subsequent changes in human habits were not immediate, their work would prompt individuals and nations to take a long, hard look at environmental issues and their place in it. In recent years, increased lobbying and strategic PR campaigns have drawn even more attention to the conservationist cause.
Ever look at those bizarre photos of people posing next to the Leaning Tower of Pisa and wonder what they might be thinking? With the help of this video, you now know.