March 6

On March 4, 2012, a series of catastrophic explosions erupted at a military ammunition depot in Brazzaville, Republic of the Congo, resulting in significant loss of life and widespread destruction.

On March 27, 1964, a magnitude 9.2 earthquake struck Southcentral Alaska, causing massive destruction, deadly tsunamis, and profound changes in science, emergency response, and seismic engineering. The disaster killed 131 people and remains North America’s most powerful recorded quake.

In March 1979, a combination of mechanical failures and human errors triggered a partial meltdown at the Three Mile Island nuclear facility near Harrisburg, Pennsylvania. No one died, but the incident shook public confidence in nuclear power, transformed industry practices, and reshaped the American energy debate.