Teenagers aren’t supposed to struggle to breathe. But two years ago, Micah Clayborne, a then-active 13-year-old middle school tennis player, knew something was wrong. Still, he pushed through the ...

Micah, pictured below, was one of thousands of Americans each year who unexpectedly find themselves needing an organ transplant. Last year marked a new record in transplantation, with 48,000 Americans ...