[SeMissourian.com] Overcast ~ 35°F  
River stage: 17 ft. Rising
Sunday, Dec. 28, 2014
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)