The Beauty of Petroglyphs (also called rock engravings)

"Maple syrup soon to top $1,000.00 per gallon." The year is 2014, and this is the latest prediction from the prestigious academic journal "Scientific Economics". Could this come true? It's up to you to investigate whether global warming will endanger New England's sugar maple trees and syrup making industry. Learn how weather affects the sap of maple trees, what makes a successful sugaring season, and whether maple trees might become scarce. Report on what might be done, if necessary, to save them, and whether and when we should start stockpiling syrup.