Uncover the surprising science behind the parts of your body you might not even need with this TED-Ed companion resource for “Why do we have body parts we don’t need?” This engaging lesson includes 20 thought-provoking discussion questions, an expanded writing prompt, and a structured debate topic. Perfect for high school or college students studying biology, anatomy, or evolutionary science, this resource explores natural selection, vestigial traits, and the imperfect process of evolution—all