Cambrian Explosion Explained by Yeast Clumping Together

We've made sort of a hobby of collating and dissecting theories of how an explosion of complex novel life forms, the Cambrian explosion, can be explained without reference to the obvious explanation, intelligent design.

It's almost too much to keep up with:

"Cambrian Explosion Story Hour: Oxygen as a Creative Force, Again"

"Sorry, Faster Mutation Rate Will Not Explain the Cambrian Explosion"

"Geologists Kick Out Props for Evolutionary Theories of the Cambrian Explosion"

"New Solution to...