Drug lord's hippos make their mark on foreign ecosystem

Four hours east of Medellin in northern Colombia's Puerto Triunfo municipality, the sprawling hacienda constructed by infamous drug lord Pablo Escobar of "Narcos" fame has become a tourist attraction. When Escobar's empire ...

What causes algal blooms to become toxic?

The disastrous 2015-16 Dungeness crab season, delayed and shortened by an unprecedented bloom of toxic algae, is a bitter memory for the West Coast fishing industry. The culprit was domoic acid, a potent neurotoxin produced ...

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