If there is a time when Jimmie Johnson will see his NASCAR career come full circle, it might be this weekend.On Sunday night, ...

Single figure golfer Carly Cummins took on the challenge of trying to break 80 using only two clubs - a 7-iron and a putter ...

Through sleep deprivation, confusion, and tears, the 37-year-old rode from John o' Groats to Land's End and back ...

As a rule, the tipping points at which such feedback loops kick in are tricky to predict. “We know there are thresholds we don’t want to cross,” said Chris Field, director of Stanford ...