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Your article perpetuates a common error regarding pond aquaculture when it states, “These systems all rely on large volumes of clean water flowing to the fish and carrying waste away.” In the catfish industry (the largest pond-culture venture in the United States), ponds are only emptied for renovation once every 10 to 20 years, and […]
By Science News -
AgricultureDowntown Fisheries?
Advances may make fish farming a healthy prospect, even for inner cities.
By Janet Raloff -
AstronomyAstronomers find evidence of missing matter
Astronomers say they've likely confirmed that half of the hydrogen gas in the universe, which had not been accounted for, resides in relatively nearby reaches of intergalactic space.