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

It is often said that science must avoid any conclusions which smack of the supernatural.

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

In the 19th century the anatomy of the eye was known in great detail and the sophisticated mechanisms it employs to deliver an accurate picture of the outside world astounded everyone who was familiar with them.

The conclusion of design flows naturally from the data; we should not shrink from it; we should embrace it and build on it.

Irreducible complexity is a problem for Darwinian evolution. Whenever we see these complex functional systems we realise that they have to be designed.

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