Math and physics explain the anguish of a golf ball that zings around the rim of the hole instead of falling in.

Getting covid-19 for the first time slightly increased the risk of heart inflammation, blood clots and bleeding disorders among children, whereas being vaccinated against the virus was much safer and ...

It's the 18th hole and the game's on the line. You line up your putt, take a breath, and roll the ball toward the hole. The ...