A luxury shoe company has offered 25 million euros to restore the Colosseum in Rome. The problem: the Italian government requires corporate sponsors to organize the work as well. Stephen H. Savage of Arizona State University has located copper ore and smelting slag at Jordan’s Khirbat en-Nahas using a hyperspectral instrument called Hyperion aboard a […]

Coca leaves were chewed by people living in northwestern Peru 8,000 years ago, according to Tom Dillehay of Vanderbilt University. That’s 3,000 years earlier than previously thought. Calcium-rich rocks that had been burned were uncovered along with the leaves. The resulting lime would have boosted the medicinal effects of the coca leaves. Here’s more information […]