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Algae blooms in all 50 states

Algae Bloom in Lake Superior Raises Worries on Climate Change and Tourism

A Toxic Algal Bloom Is Spreading in Florida's Waterways | Smart News ...

Scientists cannot say for sure what causes algae blooms, but their appearance is associated with runoff, heavy rain and warming temperatures.

Harmful Algal Blooms | US EPA

What are the effects of harmful algal blooms?
Harmful algal blooms can:
  • Produce extremely dangerous toxins that can sicken or kill people and animals
  • Create dead zones in the water
  • Raise treatment costs for drinking water
  • Hurt industries that depend on clean water