Show us how you celebrate Halloween using STEM! Carve science themed pumpkins, create gooey spooky experiments or dress up as your favorite Mad Scientist! Have fun with your STEMtastic creations! How do you enter? It's easy! From now until Halloween night, just post pictures of your activity or creation onTwitter, Instagram and/or on our Facebook wall and use #ScifestBoo!  (Be sure to tag us) Contest is open to groups and individuals (ages 5-18). Note: Parents and teachers can post on behalf of children.