Beach closures often determined by flawed sampling data

Pollution events at beaches often last just one day or one hour, says Assistant Professor Alexandria Boehm, so the problem is likely to have passed by the time a warning sign is posted. Boehm also explains how sunlight and full moons can influence the decision to close beaches.

Video: Mark Shwartz

• Warning: Beach closures may not be valid
  
  
• Boehm’s website
  
  
• Natural Resources Defense Council
  
  
• National Water Research Institute
  
  
• Clare Boothe Luce Program
  

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