Research in mice offers new clues as to why Harold and Kumar were so motivated to get to White Castle. Todd Plitt/Getty Images hide caption

itoggle caption Todd Plitt/Getty Images

Take a whiff of those pears and peaches: All white wines have a citrus aroma, but some also emit tropical or more subtle fruit flavors, Richard Betts explains in his book. Text copyright 2013 by Richard Betts. Illustrations copyright (c) 2013 by Wendy MacNaughton. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved. hide caption

itoggle caption Text copyright 2013 by Richard Betts. Illustrations copyright (c) 2013 by Wendy MacNaughton. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved.

Now we know why we'll never see a common fruit fly (Drosophila melanogaster) sitting on a beet. Jan Polabinski/iStockphoto.com hide caption

itoggle caption Jan Polabinski/iStockphoto.com