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 ...

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 ...