Anna's Hummingbird (IMAGE)

Harvard Medical School

Anna's Hummingbird

Caption

Evolution at a molecular level and Research explains what anyone with a backyard birdfeeder knows: Hummingbirds have a taste for sweet nectar. Understanding taste is a way to understand pleasure and aversion, reward and punishment, sweet and bitter -- and how the neural circuits in our brain work in perception.

Credit

Maude Baldwin

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