NSF Releases Online Multimedia Package on Marine “Dead Zones”
NSF Releases Online Multimedia Package on Marine "Dead Zones" By National Science Foundation, NSFOctober 8, 2009The Earth currently has more than 400 so-called "dead zones"--expanses of oxygen-starved ocean covering hundreds, or even thousands, of square miles that become virtually devoid of animal life during the summer; the worldwide count of dead zones is doubling every [...]