New 'ballast-free ship' could cut costs while blocking aquatic invaders

University of Michigan researchers are investigating a radical new design for cargo ships that would eliminate ballast tanks, the water-filled compartments that enable non-native creatures to sneak into the Great Lakes from overseas.

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news125676989.html">New 'ballast-free ship' could cut costs while blocking aquatic invaders</a></p> <p>University of Michigan researchers are investigating a radical new design for cargo ships that would eliminate ballast tanks, the water-filled compartments that enable non-native creatures to sneak into the Great Lakes from overseas.</p>