November 22, 2017 6:00 pm Teen Creates Puzzle Book to Help Elderly With Brain Exercises A Massachusetts teenager is winning praise for creating and publishing a book of puzzles. These puzzles have a special purpose — to help the elderly keep their mind sharp. US & World Videos 1:53 Opening statements begin in the Karen Read trial 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments 0:16 4 people seriously hurt after boat sinks off Cape Cod 2:35 Fallen Billerica police sergeant honored during vigil