By Ryan Stewart For The OklahomanSecond-grader Ethan Whitener left his school thinking he might want to be a scientist someday. Whitener and nearly 300 other wide-eyed and excited students "oohed" and "aahed" at experiments conducted by Oklahoma Medical Research Foundation scientists at a recent science night at Putnam City's Will Rogers Elementary School. For Whitener, the best part was helping concoct "elephant toothpaste.Read more on NewsOK.com