phillyvoice.com15h
With a lack of natural soil in Philly, Penn is testing using recycled glass for an alternative mixture
The university planted 13 trees with an engineered blend featuring food waste compost and sand made from bottles and jars.
sciencex2d
New register opens to crown Champion Trees across the U.S.
Science X is a network of high quality websites with most complete and comprehensive daily coverage of the full sweep of ...