Ships

Thanks to a Calif. law implemented in 2008 requiring ocean-going ships to switch from high-sulfur bunker fuel to cleaner fuels within 24 miles of the coast, Bay Area air quality significantly improved by reducing deadly particulate emissions.
Oct 9, 2013   BAAQMD News Release
<p>Royal Caribbean is building the world's largest cruise ship, which will be a city in its own right with seven different neighborhoods and a central public space/urban park.</p>
Jun 22, 2008   Gizmodo