The sand trap: Demand outpaces caution--and knowledge

The sand trap: Demand outpaces caution--and knowledge 09/14/2017 12:27 PM EDT Sand, spanning miles of beaches, carpeting vast oceans and deserts, is a visual metaphor for limitless resources. Yet researchers in this week's journal Science seize another metaphor--sand in an hourglass, marking time running out. Full story at http://csis.msu.edu/news/sand-global Source Michigan State University This is an NSF News From the Field item.   Follow NSF:  This email was sent using GovDelivery Communications Cloud on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111