Kristen LearUniversity of Georgia Latest articles by Kristen Lear The World Is Running Out of Sand By Aurora Torres, Kristen Lear published 8 September 17 Opinion Opinion Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1Colors are universal — even if our perception of them is subjective2Pompeii quiz: How much do you know about the Roman town destroyed by Mount Vesuvius?3Are women less sensitive to anesthesia than men?4AI can handle tasks twice as complex every few months5Space photo of the week: Iconic 'Eagle Nebula' gets a major glow-up on Hubble's 35th anniversary