The Colorado River’s largest tributary flows ‘uphill’ for over 100 miles — and geologists may finally have an explanation for it
Geologists may have finally solved a longstanding mystery surrounding the Colorado River’s largest tributary, which appears to have defied gravity and flowed uphill when it first formed. The Green River originates in Wyoming and links up with the Colorado River in Canyonlands National Park in Utah. Around 8 million years ago, the Green River carved