Joseph J. Kohn, who played a key role in extending the mathematics of calculus, died on Sept. 13 in Plainsboro, N.J. He was 91. His death, in a hospital, was confirmed by his son, Eduardo, and by ...

Kohn, who entered Monday’s game against the Washington Nationals with a 1-0 record and 1.86 earned-run average in a team-high 10 appearances, said he was about 7 years old when his grandfather ...

“Courageous, brave and never gave up,” Yolanda Osborne-Kohn, Drew's mom, said. Celebration of life held for Drew Kohn, who died in hit-and-run years after overcoming tragic accident.