I've recently gotten back into building LEGO sets and putting together adult jigsaw puzzles ... most of which are 1,000 pieces. The price of each of these ranges between $17.95 and $22.99 when ...

Why so much time, money, and effort? Well, imagine trying to assemble a 100,000-ton, three-dimensional jigsaw puzzle with 70,000 individual pieces. That's the task Korres and his colleagues have ...