How would a scientist estimate the time when a canyon formed? Various techniques and different interpretations of those techniques have yielded a wide range of estimated dates for the formation of Arizona's Grand Canyon. But results from a new technique are again challenging the canyon's previous date. Will science ever resolve the Grand Canyon dating game?

Researchers discovered eight well-manufactured throwing spears in an Ice Age coal deposit near Schöningen, Germany. They are calling these the oldest human tools. What can forensic science reveal about the people who made them?

Giant mammals roamed North America during the Ice Age, but were humans among them? A site in Vero Beach on Florida's East coast contains mammoth, mastodon, giant ground sloth—and human fossils. The problem is that humans were not yet supposed to have been there, according to the standard story told to generations of archaeologists.

Media reports are buzzing with misleading headlines. Wired Science reported, "Giant Feathered Tyrannosaur Found in China."¹ Even the technical description, published in Nature, is titled, "A gigantic feathered dinosaur from the Lower Cretaceous of China."² Despite these assertions, the fossils' details show no actual feathers or feather imprints.