In 1938, Clover and Jotter conducted a harrowing 43-day trip down the Colorado River in an effort to map the Grand Canyon’s flora. They succeeded, despite rampant sexism and numerous physical ...

“Thanks for weeding Grand Canyon,” he said. I didn’t know how to reply. I had joined the trip to research the story of two University of Michigan scientists, Elzada Clover and Lois Jotter, who took ...

Elzada Clover and Lois Jotter ... sign up for a river trip. And of course, the Grand Canyon and Cataract Canyon and, to a lesser extent, Glen Canyon [all situated along the Colorado River] were ...

Jotter and her mentor, University of Michigan botany professor Elzada Clover, set out in ... A Naturalist Explores the Colorado River through the Grand Canyon by Ann Zwinger (University of Arizona ...

The Colorado River in the Grand Canyon is the nation’s most threatened river in 2023, the nonprofit advocacy group American Rivers declared in an annual report released Tuesday. It’s the ...

By Claire Moses An 80-year-old man whose boat flipped on the Colorado River over the weekend has become the latest fatality at Grand Canyon National Park, the fifth in less than a month and the ...

And yet, the Grand Canyon remains yoked to the present in one key respect. The Colorado River, whose wild energy incised the canyon over millions of years, is in crisis. As the planet warms ...