By Zoe Sottile, CNN
New evidence about the Nile bolsters a long-standing theory of how ancient Egyptians managed to build the massive pyramids of Giza thousands of years ago.
Researchers led by geographer Hader Sheisha at Aix-Marseille University in France used paleoecological clues to help reconstruct what Egypt’s Nile river might have looked like over the past 8,000 years.
They determined the pyramid builders likely took…