Your paper bridge may hold more pennies than you think it will. Different shapes have different structural strengths. This is a great experiment to see which shapes are strong and which ones are weak.

Powerful microscopes have allowed researchers to see what exactly holds paper together. Tiny strands of cellulose known as fibril bridges seem to play a crucial role, according to a study published ...

No nuts, no bolts, no screws, no glue. Just paper. That is what Steve Messam, an artist and bridge designer, was challenged to make a bridge out of, and one that you could drive a car over. Not just ...