In many biological structures proteins are simply components of larger molecular machines.

It was only about sixty years ago that the expansion of the universe was first observed.

The trap does not work until all the parts were there. The system itself doesn't work until you fit all of them together.

I believe the evidence strongly supports common descent. But the root question remains unanswered: What has caused complex systems to form?

The basic structure of proteins is quite simple: they are formed by hooking together in a chain discrete subunits called amino acids.

Biology has progressed tremendously due to the model that Darwin put forth. But the black boxes Darwin accepted are now being opened, and our view of the world is again being shaken.

Skin is made in large measure of a protein called collagen.