Track gender genetics case: Birth defect turns question of private parts into public debateWASHINGTON — It’s the birth defect people don’t talk about. Rookie Davis overcomes learning disability to make 49ers as No. 3 quarterbackSANTA CLARA, Calif. — Nate Davis knows he’s already shown the doubters just by winning a roster spot with the San Francisco 49ers. Evolving robots wiggle fins, tails: swimming and slithering as prey, predators for researchPOUGHKEEPSIE, N.Y. — Robots wag their tail fins and bob along like bathtub toys in a pool at a Vassar College lab. Their actions are dictated by microprocessors housed in round plastic containers, the sort you’d store soup in. |