Logan's Run (1976)June 23, 1887: Canada enacts the Rocky Mountains Park Act to create Banff National Park in the Rocky Mountains of Alberta. It is Canada's first national park.

June 23, 1976: The sci-fi film "Logan's Run" (at right) is released. In a ravaged, overpopulated 23rd Century, society has arrived upon a fix: Everyone must die when they turn 30.

June 23, 1988: NASA scientist James Hansen testifies before a U.S. Senate committee on the likelihood of climate change and its impacts. The hearing, chaired by then-Sen. Al Gore, marks the first time that climate change receives major attention in the U.S. media.

June 23, 2012:  Eight separate wildfires rage across Colorado, destroying homes and prompting evacuations in the tourist meccas of Colorado Springs and Estes Park.  Drought, record heat, and a tree-killing beetle infestation are blamed for the record-setting fire outbreak.

Photo: ZUMA Press

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