Here’s what you’ll learn when you read this story: * Fossilized footprints in Saudi Arabia show human traffic on the cusp of a subsequent ice age. * Like carbon dating, scientists use isotopes and context clues to calculate the approximate age of fossils. * These human prints were surrounded by animals but not hunted animals, indicating humans were just thirsty. ======================================================================== A uniquely preserved prehistoric mudhole could hold the oldest-ever human footprints on the Arabian Peninsula, scientists say. The seven footprints, found amidst a clutter of hundreds of prehistoric animal prints, are estimated to be 115,000 years old. Many fossil...