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ScientificAmerican;performance.mark('app-load-start');((d,ael,dcl,unl,cxl,log,onunl)=>{log('[readyState]',d.readyState);d[ael]('readystatechange',()=>log('[readyState]',d.readyState));d[ael](dcl,()=>log(dcl));d[ael](unl,onunl);window.onload=()=>{d.removeEventListener(unl,onunl);log('windowloaded')};})(document,'addEventListener','DOMContentLoaded','beforeunload','cancelled',(...msg)=>console.log('[dev]',...msg),()=>{window[cxl]=true;log(cxl)});((l,pii)=>{if(pii.some(p=>Scientific American: Science News, Expert Analysis, Health Research - Scientific Americanl.search.includes(p+"="))){window.initSearch=l.search;constanon=newURLSearchParams(l.search);pii.forEach(p=>anon.delete(p));history.replaceState({},"",l.pathname+"?"+anon);}})(location,["email","mic_link","token","code","state"]);SkiptomaincontentScientificAmericanScientificAmericanEvolutionaryBiologyDecember17,2024GreatApesJokeAround,SuggestingHumorIsOlderThanHumansStudiesofgreatapeshintatwhyandwhenclowningbehiorevolvedEricaCartmillPaleontologyDecember19,2024MostExpensiveScientific American: Science News, Expert Analysis, Health Research - 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