As a teenager, Kate Harris realized that the career she craved--to be an explorer, equal parts swashbuckler and metaphysician--had gone extinct. From what she could tell of the world from small-town Ontario, the likes of Marco Polo and Magellan had mapped the whole earth; there was nothing left to be discovered. Looking beyond this planet, she decided to become a scientist and go to Mars. In between studying at Oxford and MIT, Harris set off by bicycle...
