SEARCH

SEARCH BY CITATION

While celebrities wear white “milk moustaches” in a popular U.S. advertising campaign to promote the drinking of milk, they should also be concerned about the decreased amount of calcium available to many trees.

Calcium levels in forest soils have decreased at locations in 10 states in the eastern United States, according to a new report by the U.S. Geological Survey (USGS) released in time for National Arbor Day on April 30.