While environmental themes were less prominent at the Sundance Film Festival this year, our correspondent JoAnn Valenti unearthed ecological messages from documentaries that explore the emergence of climate change refugees in the face of sea level rise, the escape from modernity into wilderness and the confrontation of environmental threats by young innovators.

A photographer undertook an artistic and scientific odyssey that was inspired by an ancient migration now imperiled by human encroachment. His new volume tracks the mythical journeys taken by pronghorn, mule deer and elk through the Greater Yellowstone Ecosystem. BookShelf reviews Joe Riis’ “Yellowstone Migrations.”

A hard-nosed account of Monsanto and its controversial and popular herbicide Roundup comes in a new book by a former wire service reporter, who pieced together documentation and fact-finding from over 20 years to make a case there was a dangerous cover-up. BookShelf reviews Carey Gillam’s “Whitewash.”

A new book on the Gulf of Mexico earns kudos for the balance and passion of its tone, as well as for its historical storytelling about this important ecosystem and the overfishing, oil spills, hurricanes, explosive growth and poor land-use decisions it faces. BookShelf reviews Jack Davis’ “The Gulf.”

They count in the tens, perhaps hundreds of thousands, and each one is a potential story. This week’s TipSheet looks at abandoned mines spread across the United States, many of them polluted, and with few cleanups underway. Find out what’s at stake, and get reporting resources.