Cattle vs. hippopotamus: Dung in rivers of the savannah

In many regions of the world, populations of large mammalian herbivores have been displaced by cattle breeding—for example, in Kenya, hippos by large herds of cattle. This can change aquatic ecosystems due to significant ...

Does MRI have an environmental impact?

Researchers from Tokyo Metropolitan University have surveyed the amount of gadolinium found in river water in Tokyo. Gadolinium is contained in contrast agents given to patients undergoing medical magnetic resonance imaging ...

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