A century ago, mountain lions were vilified as a threat to livestock and hunted to the verge of extinction. Its recovery has led to an unexpected conundrum: Do more mountain lions mean they're a threat to humans and domestic animals? Or, are mountain lions still in need of our help and protection as their habitat dwindles? Mountain lion biologist and expert Mark Elbroch welcomes these tough questions. He dismisses long-held myths about mountain lions and uses groundbreaking science to uncover important new information about their social habits.

North America's biggest cat was once killed for bounty dollars, slaughtered with impunity and driven toward extinction. But today's cat of intrigue, despite our lingering fears and misconceptions, has returned to much of its native range in the western United States and gained respect as a predator integral and necessary to wild ecosystems. This turnaround was triggered by one man: Maurice Hornocker. Cougars on the Cliff recounts the early years of his research when he tracked lions following a dog's nose and footprints in the snow—before telemetry was available.

In 1908, near Folsom, New Mexico, a cowboy discovered the remains of a herd of extinct giant bison. By examining flint points embedded in the bones, archeologists later determined that a band of humans had killed and butchered the animals 12,450 years ago. This discovery vastly expanded America's known human history but also revealed the long-standing danger Homo sapiens presented to the continent's evolutionary richness. Distinguished scholar Dan Flores's ambitious history chronicles the epoch in which humans and animals have coexisted in the "wild new world" of North America.

What does it take to be one of the world's best high-altitude mountain climbers? A lot of fundraising; traveling in some of the world's most dangerous countries; enduring cold bivouacs, searing lungs, and a cloudy mind when you can least afford one. It means learning the hard lessons the mountains teach. Steve House built his reputation on ascents throughout the Alps, Canada, Alaska, the Karakoram, and the Himalaya that have expanded possibilities of style, speed, and difficulty.

Yellowstone National Park was once home to an abundance of wild wolves - but park rangers killed the last of their kind in the 1920s. Decades later, the rangers brought them back, with the first wolves arriving from Canada in 1995. This is the incredible true story of one of those wolves.