When Harlen Bretz finally received Geology's highest honor for his work on the Channeled Scablands of eastern Washington state, literally all of his opponents,

When Harlen Bretz finally received Geology's highest honor for his work on the Channeled Scablands of eastern Washington state, literally all of his opponents, who had rabidly blighted his career, had died of old age. There are still lots of geologists and historians who insist there was no Younger Dryas Boundary bolide strike and continentwide conflagration responsible for extinction of most large North American genera; and plenty who still even insist on Clovis First. Topically, Bretz was hampered buy lack of a source for the many cubic miles of meltwater his scenario called for. (Lake Missoula did not suffice, though it was pressed into service.) It was finally resolved by proof of the bolide strike.