Hidden rock moisture possible key to forest response to drought Find related stories on NSF's Critical Zone Observatories webpage . A little-studied, underground layer of rock may provide a vital reservoir for trees, especially in times of drought, report scientists funded by the National Science Foundation (NSF) and affiliated with The University of Texas (UT) at Austin and the University of California, Berkeley. The study, published today ... More at https://www.nsf.gov/news/news_summ.jsp?cntn_id=244513&WT.mc_id=USNSF_51&WT.mc_ev=click This is an NSF News item. Published February 27, 2018 at 01:00AM Read more at nsf.gov