Gretna Green students came out on top at the District 16 Elementary Science Fair that was held at Gretna Green on Tuesday, March 27.  Congratulations to our winners: Bilal Khan, who won Gold for his project on Hydrophobic Sand; Isabella Gallant who won silver with her project called "How Does Popcorn Pop?";Alexis Matchett and Kamryn Morehouse also shared bronze with two other schools. Their project was "What is Sad about a Happy Meal?"