National Geographic

THE DISCOVERIES OF TODAY THAT WILL DEFINE THE WORLD OF TOMORROWNATIONAL GEOGRAPHICEMBARK# YBY AGUSTÍN FUENTESIT’S NOT BRUTISH HUMAN NATURE THAT PROMPTS NASTY POSTS ANDTWEETS, THE AUTHOR SAYS. BUT HOW WE EVOLVED DOES PLAY A ROLE.## Are We as Awful## as We Act Online?VOL. 234 NO. 2IN THIS SECTIONToward Greener CitiesMushrooming GrowthChilling Out on MarsMigration’s Artifacts``````“YOU NEED TO HAVE your throat cut out and yourdecomposing, bug-infested body fed to wild pigs.”An anonymous Facebook user wrote that—and morethat’s unprintable—to Kyle Edmund after the Britishpro tennis player lost in a 2017 tournament.After University of Cambridge classics professorMary Beard spoke about the history of male suppres-sion of female voices, she received Twitter threats,including “I’m going to cut of your head and rape it.”On Martin Luther King Day this year, an anony-mous Twitter user lionized the man who killed Kingsome 50 years ago: “RIP James Earl Ray. A true fighterfor the white race.” The same month, U.S. PresidentDonald Trump tweeted that his “Nuclear Button ... isa much bigger & more powerful one” than Kim JongUn’s. This capped weeks of dueling statements inwhich Trump called the North Korean leader “RocketMan” and “a madman” and Kim called Trump “agangster” and a “mentally deranged U.S. dotard.”AUGUST 2018 17