Nicholas Strausfeld will give the talks "Evolutionary Stability, the Apical Brain Enigma, and Exuberant Divergence" at 4:45 PM on Fri., Feb. 22, at Kollros Auditorium, BBE and "Time Traveling: What Our Brains Share with the Brains of Beetles" at 10 AM on Sat., Feb. 23, at MacBride Auditorium.