The Heart Sellers”: 1 and 7:30 p.m. Wednesday, Feb. 19; 7:30 p.m. Thursday and Friday, Feb. 20-21; 2:30 and 7:30 p.m. Saturday, Feb. 22; and 2:30 p.m. Sunday, Feb.

The Des Plaines River at Brandon Road had been identified as a critical pinch point, where experts hope layered technologies will deter the upstream movement of silver and bighead carp, currently only ...