First launch of a Trident missile in 1977July 3, 1974: The U.S. and Soviet Union sign the Threshold Test Ban Treaty (TTBT) in Moscow, banning nuclear weapons tests larger than 150 kilotons.

July 3, 1978: Despite millions spent on flood control projects on the Kickapoo River, the streets of downtown Soldiers Grove, Wisconsin are awash for at least the tenth time in the century. Facing possible economic ruin, the town secures federal funds to move itself uphill. What used to be downtown Soldiers Grove becomes a park, where it still floods, but the towns homes and businesses thrive today.

July 3, 1994: Dry lightning sparks a wildfire seven miles west of Glenwood Springs, Colorado. Three days later, 14 firefighters died as a wall of flame raced up Storm King Mountain. The tragedy prompted a thorough examination of safety, risk-taking, and firefighting priorities.

Photo: Wikimedia Commons

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