latest news Will Ratcliff awarded a Packard fellowship in Science and Engineering. Thanks Packard Foundation! Welcome to the Ratcliff lab at Georgia Tech Our group uses experimental evolution to examine the origin of biological complexity, with a focus on multicellularity. Using baker’s yeast yeast and the algae Chlamydomonas, we are examining how unicellular organisms can evolve to form multicellular clusters, and how these clusters evolve to become more sophisticated. For more, check out Emily Singer’s great article at Quanta magazine. Also, take a look at our Research page. Through this research, we also work on: The evolution of cooperation. Bet hedging / evolution in fluctuating environments. The evolution of aging. Life cycle evolution. The evolution of multicellular development. Experimental evolution in high schools The evolution of biological complexity remains one of the most challenging topics in biology to teach effectively, and is one of the most contentious scientific topics among the general public. Many people will never take a biology class past high school, and historically, few high school courses have covered the major evolutionary transitions in detail. To address this gap, we have developed a pair of labs based on our research evolving multicellularity. Read more (and order your free kit!) at You can also access our publications describing these labs here: 1. Evolve your own snowflake yeast. 2. Use predators to examine ecologically-realistic selection leading to multicellularity.   Home Evolution of multicellularity, bet hedging and microbial cooperation Link. We are looking for a postdoc! See ad here.