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Science

  • Volume 375
  • Issue 6586
  • 18 Mar 2022
Go to Science
Go to Science

COVER White clover (Trifolium repens L.) populations in Los Angeles, such as the one shown here, evolve to have less hydrogen cyanide, a defensive chemical that also affects tolerance to abiotic stressors. A new study reveals that these plants repeatedly adapt to urban environments throughout the world, indicating that cities are drivers of evolutionary change across the planet. See page 1275.

Photo: Ashley Crichton

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