The formation of the Grand Canyon in the United States, has been pushed back 65 million years, to a time dinosaurs roamed the Earth in a new study.
It has emerged that Colorado River flowed in the opposite direction some 55 mn years ago.
Geologists have found evidence of a giant river which flowed in opposite direction some 55 mn years ago.
Day in Pics: 28th December
Showbiz World - December 28, 2014
Stars celebrate Christmas