In 2187, Marile Historian-1 just wants her Ph.D. She plans to earn her degree by traveling back in time to study Milton Carver, an Afro-American and the greatest physicist of all time. The History Department's professors worry she inadvertently changes the past. The department's head already knows she and Carver share a love that could instead change the future. 2187 a paradise? Thanks to the physics discoveries of...