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Dan Egan

  • An algal bloom in Lake Erie in 2011. (credit NASA)
    The Phosphorus Paradox
    Patrick Shea
    Harmful algal blooms are a growing concern in the Great Lakes. The toxins they produce can close beaches and even poison drinking water. What’s fueling these blooms? Phosphorus – a key ingredient in agricultural fertilizers. But the way it’s being used comes at a cost.
  • An algal bloom in Lake Erie in 2011. (credit NASA)
    The Phosphorus Paradox
    Harmful algal blooms are a growing concern in the Great Lakes. The toxins they produce can close beaches and even poison drinking water. What’s fueling these blooms? Phosphorus – a key ingredient in agricultural fertilizers. But the way it’s being used comes at a cost.