Jalen Brunson scores 31 points as Sixers fall to Knicks, 112-109

Jalen Brunson scored 31 points, as the New York Knicks defeated the 76ers, 112-109.

Black mathematician Gladys West, who helped develop GPS, has died at age 95

Groundbreaking Black mathematician Gladys West, who helped develop the algorithms behind GPS, died Jan. 17 at age 95. NPR's Scott Simon talks to Marvin Jackson, who co-wrote West's memoir.