Ross Hyman watches his son Aaron use a long wing to pick up speed and "fly." Long wings take more effort to get going, while short wings get flying easier. "There’s lots you can see," said Aaron, 5.
Ana Laura Garcia sees how much effort it takes for a giraffe's heart to pump blood up to its brain. Next to that replica of a giraffe is a real giraffe's heart, which shows visitors the heart models of a mammal, bird, reptile, amphibian, and fish.