In 1869, one-armed Civil War veteran John Wesley Powell set out to map the Colorado River, but his dangerous expedition became the first to reveal the immense geology of the Grand Canyon to science
Published on: July 10, 2026, 6:27 p.m. | Source: Times of India
Science News: Discover how John Wesley Powell, a one-armed Civil War veteran, led a historic expedition to map the Colorado River and reveal the Grand Canyon's geological wonders in 1869.
