You don’t miss your water -- till it turns toxic
Growing toxic threat from blue-green algae in lakes, rivers
Excess phosphorus fuels growth of dangerous cyanobacteria that make a range of toxins. Control efforts have focused on sewage treatment plants, but the growing impact of agriculture cannot be ignored much longer. More »
Flying south for the winter?Bird migration explained More »
Planet discoveries boost LifeSearch 2.0Maybe alien life is inevitable — but how to discover it? More »
On the wing: Birds, skeeters, jet planes: Same design rule applies!They both fly. So why don’t they both respond to the same “design” imperatives? More »