1、PLUSSCIENCE FOR THE CURIOUSHOW EVOLUTION REWARDS CHEATERS P.36A New Tool to Solve Crimes P.10Shape-Shifters of Math P.42Why Do We NeedSleep,Anyway?P.50 for?Better brain health?Lower disease risk?Longer life span P.26 OCTOBER 2018BONUSONLINECONTENT CODE p.3AARP MEMBER BENEFITSAARP members receive a 5
2、%discount on service and usage every month.WEVE GOT YOU COVEREDConnect on the nations largest networks,with coverage to 99%of the U.S.RANKED#1 BY J.D.POWER“Highest in Customer Service among Non-Contract Value Wireless Providers,Five Times in a Row.”NATIONWIDECOVERAGE 2018 Consumer Cellular,Inc.New s
3、ervice activation on approved credit.Cellular service is not available in all areas and is subject to system limitations.Terms and Conditions subject to change.The totals shown here are costs for monthly Consumer Cellular service only.They do not include any state or local taxes.First Month Free of
4、er applies only to new customers for service activated August 15-September 30,2018.Costs of Talk and Connect Plans,plus access fees on all lines,are free for the fi rst monthly billing cycle following activation.Of er does not cover any additional costs,such as equipment purchase,extended warranties
5、,411 charges,data over 10GB,international calling,any mandatory government surcharges,taxes,fees,etc.Current customers adding a line during this promotion receive a$15 credit for one-month additional line fee.Consumer Cellular received the highest number among four non-contract value providers in th
6、e J.D.Power 2016 V2-2018 V2 U.S.Wireless Customer Care Performance Study of customers satisfaction with their wireless customer care experience.Your experiences may vary.Visit member benefi ts are provided by third parties,not by AARP or its af liates.Providers pay a royalty fee to AARP for the use
7、of its intellectual property.These fees are used for the general purposes of AARP.Some provider of ers are subject to change and may have restrictions.Please contact the provider directly for details.OUR MOST POPULAR PLANS FOR 1&2 LINES!See all of our plans at ConsumerC INCLUDED2 LINESTALKUNLIMITED$
8、45A MONTH1GBDATAUNLIMITEDTEXTINCLUDED1 LINETALKUNLIMITED$25A MONTH250MBDATAUNLIMITEDTEXT$15A MONTHINCLUDED1 LINETALK250MINUTESCALL CONSUMER CELLULAR(888)528-3882VISIT US ONLINEConsumerC 2018 DISCOVER 3OCTOBER 2018 VOL.39,NO.826 Not So FastDieters are losing weight following a plan that might also im
9、prove memory and extend life.Is it for real?BY MARK BARNA36 How Cheaters ProsperUsually,animals cooperate with each other for mutual beneits.Learn why some go rogue.BY KRISTIN OHLSON 42 Shape ShiftersA malleable branch of math with an approach akin to a surrealists fever dream may one day change the
10、 course of technology.BY DEVIN POWELL50 Searching for the SandmanScientists are unraveling the mysteries of sleep.BY HENRY NICHOLLS CHRISTOPHER WRENFEATURESCooperation with other species can offer a survival advantage,though some dont hold up their part of the bargain.See page 36.Website access code
11、:DSD1810 Enter this code at:www.DiscoverM to gain access to exclusive subscriber content.PLUSSCIENCE FOR THE CURIOUSHOW EVOLUTION REWARDS CHEATERS P.36A New Tool to Solve Crimes P.10Shape-Shifters of Math P.42Why Do We NeedSleep,Anyway?P.50WeightLossScience for?Better brain health?Lower disease risk
12、?Longer life span P.26 DiscoverOCTOBER 201857 OUT THERE:BONUS ASTRONOMY SECTIONA mission to Jupiters asteroids could reveal how our solar system formed.Plus,peruse 60 years of false alarms in the hunt for E.T.4 DISCOVERMAGAZINE.COMCOLUMNS&DEPARTMENTS6 EDITORS NOTECounting CaloriesDieting is a lot si
13、mpler than it used to be theres no calculator required.7 INBOXReaders weigh in on“octopi,”magic mushrooms and munching crickets.18 VITAL SIGNSLow NoteA teenage girl shows symptoms normally associated with male puberty.BY JULIA MICHIE BRUCKNER22 NOTES FROM EARTHA River Runs hrough ItOne scientist stu
14、dies waterways to learn how they behave during extreme weather events.BY BARBARA FRASER66 HISTORY LESSONShe Coroner CrisisThe challenges forensic pathologists face today are not without precedent.BY EMILIE LE BEAU LUCCHESI9 THE CRUXConflicting studies spur debate on old brains and new neurons;a revo
15、lutionary method helps police track spent bullets to criminals;a new paper could shake up Californias earthquake predictions;sporting events take a bite out of crime in the Windy City;and more.TOP:ROEN KELLY/DISCOVER.BOTTOM:JOEL SARTORE/NATIONAL GEOGRPAPHIC CREATIVEON THE COVERHow Evolution Rewards
16、Cheaters p.36Weight Loss Science p.26A New Tool to Solve Crimes p.10Shape-Shifters of Math p.42Why Do We Need Sleep,Anyway?p.50COVER:Design36/Shutterstock70 PROGNOSISCellular CyborgsBy programming organic life like a micro machine,scientists may develop ways to regulate body chemistry and create better medical treatments.BY ERIC SMALLEY74 20 THINGS YOU DIDNT KNOW ABOUT PoisonThe wrong dose can do you harm,but when its right,your pain and wrinkles might go away.BY GEMMA TARLACH The venomous slow