The Discovery Institute, which supports intelligent design research, says it was barred from presenting evidence that some features of life are too complex to have evolved by accident. The director of the five-day conference at Rome's Pontifical Gregorian University, the Rev. Marc Leclerc, says intelligent design is not represented because it isn't scientific. Discovery Institute President Bruce Chapman responds that Pope Benedict has called the universe an "intelligent project,'' and Leclerc lacks the science credentials of intelligent design researchers. During a question and answer session at the conference, a creationist challenged participants to present proof of transitional life forms. He had the microphone taken away from him.