Down the Great Unknown: John Wesley Powell's 1869 Journey of Discovery and Tragedy Through the Grand Canyon

A Brief History of Earth: Four Billion Years in Eight Chapters

Peterson Field Guide To Moths Of Northeastern North America (Peterson Field Guides)

Innumerable Insects: The Story of the Most Diverse and Myriad Animals on Earth (Natural Histories)

Peterson First Guide To Trees

Otherlands: A Journey Through Earth's Extinct Worlds

Lizards of the World: A Guide to Every Family

The Uninhabitable Earth: Life After Warming

The Sacred Balance, 25th anniversary edition: Rediscovering Our Place in Nature (Foreword by Robin Wall Kimmerer)

Lab 257: The Disturbing Story of the Government's Secret Germ Laboratory