More than 300 species of kelp in the Earth’s oceans provide habitat for an enormous diversity of ocean species. They play an integral role in the global carbon cycle, are a rich food source for humans and ocean-dwelling species, and are used to make pharmaceuticals and fuel. With an exploding human population and shrinking land mass for crops, kelp beds could play an increasingly important role in feeding and powering our world.
Sound travels more than 4 times faster in water than in air.— NOAA
- Free Radicals is produced by the graduate students of the Center for Science and Medical Journalism at Boston University.