Protests at the G-20 in 2009Sept. 24, 1906: Using the authority of the Antiquities Act for the first time, U.S. President Theodore Roosevelt creates the Devil’s Tower National Monument in Wyoming.

Sept. 24, 1984: A pile of 4 million abandoned tires, dumped on the banks of the Snohomish River in Everett, Wash., and nicknamed “Mount Firestone,” becomes an active tire volcano. Mount Firestone burns out of control for months, spewing toxins into the air and molten tires into the river.

Sept. 24, 2009: As the G-20 nations meet in Pittsburgh, police use pepper gas and “non-lethal” weapons to disperse 2,000 protesters who attempt to approach the meeting (at right). The “G-20” largest economies represent 85 percent of the world’s wealth, and are viewed by many environmentalists as being responsible for the bulk of the world's environmental damage.

Sept. 24, 2012:  A report compiled by the DARA group, a European consulting firm, estimated that climate change is already costing the world $1.2 trillion per year.  DARA estimated that climate impacts also contribute to 400,000 deaths worldwide annually.

Photo: Dar-Ape/Wikimedia Commons

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