Harrison learns how people grow, why they stop, and how to calculate estimated height.
Two children compete to match the picture of a baby animal to its parent.
Soft bodied invertebrates have no bones or major hard parts, which gives them some big advantages.
Many of the earth's scariest creatures are actually just trying to survive.
How are we able to perform complex tasks without consciously thinking about them and what is gut instinct? Morgan Freeman finds out.
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