View full size JOHN C. WHITEHEAD, The Patriot-News Jon Tirado 18, of Hummelstown, left, and Alyssa Hoffman of Grantville dance during the "Butterfly Ball" on Saturday night.

DIY disco ball decor adds vibrant flair to any room. ... The World’s Largest “Butterfly” ... bison and rhinoceroses depicted in prehistoric cave art kept hidden in France.