[SeMissourian.com] Fair ~ 65°F  
River stage: 21.67 ft. Falling
Monday, Apr. 27, 2015
Vassar College biology and cognitive science professor John Long, right, and two of his students look on April 3 as swimming robots, bottom right, navigate in a science lab pool in Poughkeepsie, N.Y. (Mike Groll ~ Associated Press)