Exploration across human history has made us and revealed us as who we are: curious, adventurous, daring.  “Into the Unknown:  How Great Explorers Found Their Way by Land, Sea, and Air,” written by Stewart Ross and illustrated by Stephen Biesty, does an excellent job of capturing this side of humanity.

Ross has chosen an interesting spectrum of people to discuss, and not all of them are familiar household names.  Because of his focus on journeys he deems “amazing,” he can choose pe...