Paleontologists have unveiled a 30,000-year-old vulture fossil in Italy, preserved in volcanic ash, showcasing microscopic ...
We asked Aicher, author of "Guide to the Aqueducts of Ancient ... the city of Rome clean. Romans used tunnels to get to prized underground springs and bring water through hills and mountains.
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The ruins of an ...