Researchers deMenocal and Tierney with Sediment Core (image) University of Arizona Share Print E-Mail Caption Researchers Peter deMenocal and Jessica Tierney examine a sediment core at Columbia University's Lamont-Doherty Earth Observatory. Scientists can use such cores of marine sediments to figure out what the climate was thousands of years ago. Credit Credit: Lamont-Doherty Earth Observatory Usage Restrictions This photo may only be used to illustrate a story about the research described in the news release, "Horn of Africa Drying Ever Faster as Climate Warms." The photo credit must run with the picture. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.