Ghosts of Evolution

Since avocados are fruits, is guacamole a smoothie? The video explains how trees that produce fruit with no natural way to spread their seeds are still alive. It goes into detail about avocado trees and ginko biloba trees.

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Instructional Ideas
  • Challenge class members to write their own Ghosts of Evolution song, like this one by the scientist who researched the topic
  • Make a list of other ghosts of evolution
Classroom Considerations
  • Requires no prior knowledge, but having familiarity with one of the plants mentioned would be helpful
  • Includes closed captioning in English and Hebrew
  • Provides high-quality links to Smithsonian, Yale, and others in the notes section on YouTube
  • None