For centuries, mariners have spun tales of gargantuan waves, 100-feet high or taller. Until recently scientists dis​missed these stories - waves that high would seem to violate the laws of physics. But in the past few decades, as a startling number of ships vanished and new evidence has emerged, oceanographers realized something scary was brewing in the planet’s waters. They found their proof in February 2000, when a British research vessel was trapped in a vortex of impossibly mammoth waves in the North Sea - including several that approached 100 feet.

As a park ranger with the National Park Service's law enforcement team, Andrea Lankford led search and rescue missions in some of the most beautiful (and dangerous) landscapes across America, from Yosemite to the Grand Canyon. But though she had the support of the agency, Andrea grew frustrated with the service's bureaucratic idiosyncrasies, and left the force after twelve years. Two decades later, however, she stumbles across a mystery that pulls her right back where she left off: three young men have vanished from the Pacific Crest Trail.

In August of 1914, the British ship Endurance set sail for the South Atlantic. In October, 1915, still half a continent away from its intended base, the ship was trapped, then crushed in the ice. For five months, Sir Ernest Shackleton and his men, drifting on ice packs, were castaways in one of the most savage regions of the world.

Narrated by the visionary founding member, Hell's Angel provides a fascinating all-access pass to the secret world of the notorious Hell's Angels Motorcycle Club. Sonny Barger recounts the birth of the original Oakland Hell's Angels and the four turbulent decades that followed. Hell's Angel also chronicles the way the HAMC revolutionized the look of the Harley-Davidson motorcycle and built what has become a worldwide bike-riding fraternity, a beacon for freedom-seekers the world over.

Five oceans—the Atlantic, the Pacific, the Indian, the Arctic, and the Southern—cover approximately 70 percent of the earth. Yet we know little about what lies beneath them. By the early 2020s, less than twenty-five percent of the ocean’s floor has been charted, most close to shorelines, and over three quarters of the ocean lies in in what is called the Deep Sea, depths below a thousand meters.