Decades of dumping acid suggest acid rain may make trees thirstier
Acidified soil loses calcium, which helps plants retain water
![Fenrow Experimental Forest](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/08/073119_cw_thirsty-forest_feat.jpg?fit=1030%2C580&ssl=1)
DROPPING ACID The U.S. Forest Service has been dousing the Fernow Experimental Forest (shown) near Parsons, W.Va., with acidifying chemicals since 1989 to simulate acid rain. The results suggest acidification may make trees thirstier.
M. Lanning