On Jan. 15, 2013, NASA's Aqua satellite captured a trail of serpentine cloud shapes snaking across the eastern Pacific Ocean. Some were natural clouds, while others were ship tracks”clouds seeded by particles in ship exhaust.
On Jan. 15, 2013, NASA's Aqua satellite captured a trail of serpentine cloud shapes snaking across the eastern Pacific Ocean. Some were natural clouds, while others were ship tracks”clouds seeded by particles in ship exhaust.