What are the limits of evolution? 150 years after Darwin, very little experimental research has been done to answer that simple question. Many scientists simply take evolutionary change from species to species (macroevolution) for granted, given the small scale change within species (microevolution) that we see every day. However, actually testing the limits of evolutionary change is a different animal (no pun intended).

This week we steal yet another show from the ID the Future podcast. We'll hear Rob Crowther interview former Stanford Medical School and now University of Wisconsin-Superior microbiologist Dr. Ralph Seelke about evolutionary change in the 2000 generations and 1.5 trillion bacteria cells he's observed.

You can check out Dr. Seelke's bio and home on the web here and read his What Can Evolution Really Do? paper here. For more info on intelligent design and evolution visit www.discovery.org/csc.