Even more unexpectedly, I have been able to make tennis-ball towers consisting of layers of four balls (4 n + 1) and five balls too (5 n + 1). Their equilibria are more delicate and, in the case of ...

After just two weeks, the ball is essentially gone. Company launches groundbreaking golf balls that disappear after play: ...

A team led by UChicago Pritzker Molecular Engineering has discovered materials that defy convention, shrinking when heated ...

How does the new golf ball from Sam’s Club stack up? Mike Bailey took it out to the course, the short game area and the ...