Hr1: News Roundup, Worry, Human Settlement of the Americas, Genius, Spirals
Apr 28, 2017, 07:00 PM
A fossil find in California makes the case for human settlement of the Americas 130,000 years ago--more than 100,000 years earlier than previously believed. But not all anthropologists are convinced. Plus, a new TV series based on a biography of Einstein. And a mathematical artist and his never-ending blooms.