Students win big at Greyhills Academy High School science fair

The big winners were 11th-graders Marina Rodriguez and Tori Hemstreet with their entry titled, “Air filtration of particulate matter using charcoal from Pinus Ponderosa.”The big winners were 11th-graders Marina Rodriguez and Tori Hemstreet with their entry titled, “Air filtration of particulate matter using charcoal from Pinus Ponderosa.”