My Heart-Stopping Ride Aboard the Navy’s Great Green Fleet

The navy is pushing toward green fuels and energy efficiency, but not always with the agreement of Congress.

Four times in history it has overhauled old transportation paradigms—from sail to coal to gasoline to diesel to nuclear—carrying commercial shipping with it in the process. “We are a better Navy and a better Marine Corps for innovation,” Mabus says. “We have led the world in the adoption of new energy strategies in the past. This is our legacy.”

It goes beyond supply lines. Rising sea levels lapping at naval bases? A melting and increasingly militarized Arctic? The Navy is tackling problems that freeze Congress solid. What it learns, what it implements, and how it adapts and innovates will drive market changes that could alter the course of the world.

But not without a fight.