HealthEbola's Relentless Tides: A Timeline [Updated]The latest outbreak in humans represents not just the most recent but also most deadly among several incidents dating back to 1976By Nicholas St. Fleur, Dina Fine Maron on July 21, 2015Advertisement ABOUT THE AUTHOR(S) Follow Nicholas St. Fleur on TwitterRecent Articles by Nicholas St. FleurLonesome George, the Giant Tortoise, Preserved in All His GloryLonesome George, the Last of His Kind, Strikes His Final PoseLonesome George, the Last of His Kind, Strikes His Final Pose [Slideshow]Dina Fine Maron, formerly an associate editor at Scientific American, is now a wildlife trade investigative reporter at National Geographic. Follow Dina Fine Maron on Twitter Credit: Nick HigginsRecent Articles by Dina Fine MaronGene Therapy Tackles a Common Birth Defect: DeafnessData Confirm Semiautomatic Rifles Linked to More Deaths, InjuriesCRISPR Gene Editing Shows Promise for Treating a Fatal Muscle Disease