Planet Money Summer School

Intro Econ 4: Scarcity & Pistachios

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Jul 29, 2020
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INSIGHT

Decisions Have Side Effects

  • Externalities are side effects your choices impose on bystanders who aren't part of a transaction.
  • Recognizing externalities reframes individual choices as social problems requiring coordination or policy.
ANECDOTE

Porterville Resident Loses Household Water

  • Karen Hendrickson lost access to her household well during California's drought and relied on portable water stations.
  • Neighbors still access water via deep wells while Karen and others were left without running water.
ANECDOTE

Farmers Drill Deep For Profitable Nuts

  • Mark Wadi runs a lush pistachio farm atop the shared aquifer while many nearby wells dry up.
  • He drilled eight new wells costing about $2 million to keep producing pistachios.
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