5 HEADLINE SOCIAL SHARES Photo: Brandon Echter Social Feed "About 25 percent of the world's population, so literally billions of people, rely on these types of [cave] systems for their drinking water," says @ProfJasonPolk "Successful day servicing water sampler, @YSIinc, and H-ADCPs at South Calcasieu River" #science @TheH2OInstitute @leland230 @crabioscar "Out here saving the waterways while trying to not get run over." @adambrackley kayakevan: "That's what keeps you sharp!" Science Friday @scifri Cyndhia R. @CoastalRedwoods coryruthlessrouth • Follow 3:32 PM - 26 Nov 2017 12 Retweets 18 Likes 6:32 PM - 23 Oct 2017 4 Retweets 8 Likes November 8th 47 Likes facebook.com/myYSI youtube.com/ysiinc twitter.com/YSIinc Connect with us: