Your Inner Fish: The amazing discovery of our 375-million-year-old ancestor

Braving It: A Father, a Daughter, and an Unforgettable Journey into the Alaskan Wild

The Universe Within: A Scientific Adventure

Polar Bear: An Endangered Species

1912: The Year the World Discovered Antarctica

Some Assembly Required: Decoding Four Billion Years of Life, from Ancient Fossils to DNA

Eastbound through Siberia: Observations from the Great Northern Expedition

Great Transformations in Vertebrate Evolution

Into the Great Emptiness: Peril and Survival on the Greenland Ice Cap

The Great White Bear: A Natural & Unnatural History of the Polar Bear

The Arctic Guide: Wildlife of the Far North

The Hidden Life of Ice: Dispatches from a Disappearing World

Alaska: Saga of a Bold Land

A Thousand Trails Home: Living with Caribou

The Ice Passage: A True Story of Ambition, Disaster, and Endurance in the Arctic Wilderness

The Worst Journey in the World: Antarctic 1910-1913

Empire Antarctica: Ice, Silence, and Emperor Penguins

Prisoners of the North

The Ice at the End of the World: An Epic Journey into Greenland's Buried Past and Our Perilous Future