In the Storm the Castle category, Hammond Academy of Science and Technology eighth-grader Mackenzy Goreham, left, watches as eighth-grader Shelby Calzoni repositions the string on the trebuchet Saturday at the Northwest Indiana Regional Science Olympiad at Purdue University Calumet. ???? ???? ???
Read the original article here: http://www.nwitimes.com/news/local/porter/solving-science-secrets/image_09b3cc7c-e7fe-53f2-b464-cdab86f2e3bc.html