Living things are on the move everywhere. Why do some of them go to great lengths to migrate, while others stay put?
The way an embryo develops shows a method of patterning that makes use of physical processes as if they conform to a predetermined plan.
Some scientists may denounce ID as a movement, but they find its practice very useful.
The interaction with Lents is of interest because it provides an opportunity to look again, in some detail, at a fascinating illustration of design in action.
Recently, a team of British paleontologists added a new pseudo-explanation.