Is It Time to Upend the Periodic Table? The iconic chart of elements has served chemistry well for 150 years. But it’s not the only option out there, and scientists are pushing its limits. The New York Times, August 27, 2019. Alex Eben Meyer This content is password protected. View at the original site or enter your password below. Password: Share By Siobhan Roberts0 Siobhan Roberts Posts by Siobhan Roberts