Radiolab

Smarty Plants

116 snips
Jan 10, 2025
Monica Gagliano, an evolutionary ecologist who challenges traditional views on plant intelligence, joins home inspector Alvin Ubell to discuss the surprising capabilities of plants. They explore how plants may sense their environment and even exhibit memory, using fascinating examples like the mimosa pudica's defensive reflexes. Ubell reveals the intricate ways plant roots interface with infrastructure, highlighting a plant's instinctual behavior in seeking water. Together, they encourage a rethinking of what constitutes intelligence in the natural world.
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ANECDOTE

Tree Roots and Pipes

  • Tree roots often grow towards and crack underground water pipes.
  • The Ubell home inspectors frequently observe this phenomenon.
INSIGHT

Plants' Water Sensing

  • Plants can sense water without direct contact or moisture gradients.
  • In an experiment, plant roots grew towards water pipes located outside a Y-shaped pot.
ANECDOTE

Plants Respond to Sound

  • Plants responded to the sound of water, not just the presence of water.
  • Roots grew towards the source of the sound, even when no actual water was present.
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