Skilled explorer or overreaching dilettante? Crusading abolitionist or violent murderer? General with the soul of a country on his mind? Or self-centered opportunist only interested in tapping the ...

Add Yahoo as a preferred source to see more of our stories on Google. In the 19th century, biology, physics, chemistry, archaeology, geology, geography, and paleontology took off like a rocket, as did ...

In the 1800s, many explorers flocked to the polar regions. But another vast, uncharted land presented opposite difficulties, ...

In the end, in the dark, it all came down to three things — experience, good judgment in the face of uncertainty, and penguin ...

Introduction: the great explorers -- Alexander Mackenzie -- Lewis and Clark -- John Colter -- Manuel Lisa -- Zebulon Pike -- Stephen Long -- Jedediah Smith -- The Patties -- Charles Wilkes -- John C.