"In 1899, railroad magnate Edward H. Harriman organized a most unusual summer voyage to the wilds of Alaska: He converted a steamship into a luxury "floating university," populated by some of America's best and brightest scientists and writers, including the anti-capitalist eco-prophet John Muir. Those aboard encountered a land of immeasurable beauty and impending environmental calamity. More than a hundred years later, Alaska is still America's most...

"The New York Times bestselling author of Turn Right at Machu Picchu sets out to uncover the truth behind the legendary lost city of Atlantis. A few years ago, Mark Adams made a strange discovery: Everything we know about the lost city of Atlantis comes from the work of one man, the Greek philosopher Plato. Then he made a second, stranger discovery: Amateur explorers are still actively searching for this sunken city all around the world, based entirely...