Al GoreMay 24, 1869:  Civil War veteran John Wesley Powell and his crew launch their boats into Wyoming’s Green River on a journey that would take them through the Grand Canyon.  Powell, who had lost an arm in the war, led a second mapping expedition of the Canyon and Colorado River two years later.

May 24, 1990: Earth First! activist Judi Bari is seriously injured when a bomb explodes in her car in Oakland, Calif. Bari and passenger Darryl Cherney are soon publicly accused by the FBI and Oakland police of planting the bomb themselves. No charges are ever filed, and Bari and Cherney are exonerated 12 years later by a $4.4 million jury verdict against the Oakland Police Department and the FBI. For Bari, it is a posthumous award. She died in 1997.

May 24, 2006: "An Inconvenient Truth," a documentary featuring former U.S. Vice President Al Gore (at right) explaining the threats of climate change, opens in New York and Los Angeles.

May 24, 2011:  The Center for Public Integrity publishes an investigative story charging that the Obama Administration took shortcuts to guarantee a loan to a politically-connected California solar manufacturer.  Six months later, “Solyndra” becomes synonymous with “scandal” for the White House.

May 24, 2012:  A relentless critic of environmental advocates and regulation does an abrupt u-turn.  Writing in, columnist Michael Fumento condemns what he calls the “mass hysteria” of his former colleagues on the far right on issues like climate change and President Obama’s birth origins.

Photo: ZUMA Press

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

May 24
Judi Bari is injured, and 'An Inconvenient Truth' is released.