Told with sincerity, humor, and wit, *Trespassing Across America* is both a fascinating account of one man's remarkable journey along the Keystone XL pipeline and a meditation on climate change, the beauty of the natural world, and the extremes to which we can push ourselves, both physically and mentally. It started as a far-fetched idea to hike the entire length of the proposed route of the Keystone XL pipeline. But in the months that followed, it grew into something more for Ken Ilgunas. It became an irresistible adventure, an opportunity not only to draw attention to global warming but also to explore his personal limits. So in September 2012, he strapped on his backpack, stuck out his thumb on the interstate just north of Denver, and hitchhiked 1,500 miles to the Alberta tar sands. Once there, he turned around and began his 1,700-mile trek to the XL's endpoint on the Gulf Coast of Texas, a journey he would complete entirely on foot, walking almost exclusively across private property. Both a travel memoir and a reflection on climate change, *Trespassing Across America* is filled with colorful characters, harrowing physical trials, and strange encounters with the weather, terrain, and animals of America's plains. A tribute to the Great Plains and the people who live there, Ilgunas's memoir grapples with difficult questions about our place in the world: What is our personal responsibility as stewards of the land? As members of a rapidly warming planet? As mere individuals up against something as powerful as the fossil fuel industry? Ultimately, *Trespassing Across America* is a call to embrace the belief that a life lived not half wild is a life only half lived.