Why are puzzles puzzling?

I was walking from the parking lot today in the rain carrying many packages as well as holding an umbrella. I either need an umbrella that f...

Here are two cases of innovators donating their wonderful inventions to the people of Haiti! If you know of more cases, please comment on th...

Check out this problem solver's solution to how to move extremely heavy stones by hand! http://www.youtube.com/watch?v=oK1Rzch89Dw

You run a recycling center. Your trucks bring in the recyclable items all mixed together: plastics, cans, and glass jars. How can you easily...

I got caught in a bizarre downpour yesterday and my tennis shoes got soaked. How can I dry them in a dryer without them banging around? Dryi...

Because the shopping cart is so familiar to us, when we try to reinvent it there are so many ways that we can fall into mental ruts and func...

Here is a draft of a mission statement for a new company that I'm designing called Aha! Productions . The human mind is the source of al...