The term “climate change” was included for the first time in the latest revision of the Department of Defense Dictionary of Military and Associated Terms (Joint Publication 1-02), published last week.
Climate change is officially defined by DoD as “Variations in average weather conditions that persist over multiple decades or longer that encompass increases and decreases in temperature, shifts in precipitation, and changing risk of certain types of severe weather events.”
The new entry in the DoD Dictionary reflects a growing awareness of the actual and potential impacts of climate change on military operations.
The definition was originally proposed in the January 2016 DoD Directive 4715.21 on Climate Change Adaptation and Resilience.
“The DoD must be able to adapt current and future operations to address the impacts of climate change in order to maintain an effective and efficient U.S. military,” the January directive stated.
With summer 2025 in the rearview mirror, we’re taking a look back to see how federal actions impacted heat preparedness and response on the ground, what’s still changing, and what the road ahead looks like for heat resilience.
Satellite imagery of RAF Lakenheath reveals new construction of a security perimeter around ten protective aircraft shelters in the designated nuclear area, the latest measure in a series of upgrades as the base prepares for the ability to store U.S. nuclear weapons.
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Getting into a shutdown is the easy part, getting out is much harder. Both sides will be looking to pin responsibility on each other, and the court of public opinion will have a major role to play as to who has the most leverage for getting us out.