The Case of the Missing Honey Bees” will be Dr. W. Todd Rainey’s focus in a Bluffton University colloquium at 4 p.m. Friday, Sept. 19, in Centennial Hall’s Stutzman Lecture Hall.

“Humans have developed an environment for honey bees that contributes a wide variety of stresses on their health and the survival rates of their colonies,” notes Rainey, a Bluffton biology professor. His presentation, which is free and open to the public, “will provide an overview of several of the changes to the environments around bee hives that contribute to the decreased survival rate of their colonies,” he says.

The talk will conclude, he adds, with consideration of “which is the straw that may break the camel’s back.”