Anewstudywarnsthataboutthirtypercentoftheworld’speoplem...
问题详情：Anewstudywarnsthataboutthirtypercentoftheworld’speoplemaynothaveenoughwaterbytheyear2025.AprivateAmericanorganizationcalledPopulationActionInternationaldidthenewstudy.Itsaysmorethan335million...