Coal-fired power plantApril 2, 1978: The Niagara Falls Gazette begins publication of reporter Michael Brown's series on the health impacts and contamination in the city's Love Canal neighborhood. Within a year, the Love Canal site becomes synonymous with toxic waste tragedies across the U.S. and around the world.

April 2, 1993: U.S. President Bill Clinton convenes a "Forest Summit" in Portland, Oregon, bringing together scientists, timber industry executives and workers and environmentalists.

April 2, 2007: The U.S. Supreme Court rules against the Bush Administration, clearing the way for the Environmental Protection Agency to regulate greenhouse gases as a pollutant (at right). After regaining control of the House of Representatives in the 2010 elections, the Republican leadership launched a furious attack on EPA's regulatory role.

Photo: ZUMA Press

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