Have you ever wondered about how archaeologists keep track of the tiny shards of bone or ancient tools they uncover at their dig sites? In this video, Alan Alda learns how modern diggers log every little find. At this early human shelter in France called Abri Castanet, archaeologists led by Randall White have collected more than 59,000 items – and counting! – so it’s obviously important to keep excellent records about each and every one. The study of our most ancient past relies on some cutting-edge modern technology.