Humans are overloading the world’s freshwater bodies with phosphorus

Poorly treated sewage and fertilizer runoff are main sources of the nutrient

algal bloom

FEELING GREEN  Freshwater bodies on more than a third of Earth’s land area (excluding Antarctica) are maxed out on phosphorus, which can help create algal blooms such as this one.

Felix Andrews (Floybix)/Wikimedia Commons (CC BY-SA 3.0)

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