A new way of looking at the physical world promises to shed light on some of the problems physics as we know it can't deal with.

This article explores how constructor theory may be able to provide answers to the questions posed in the first part of the article.

We explore some problems physics as we know it has trouble dealing with and a new theory that may provide answers.

Some uncomfortable problems in our understanding of life.

Mathematics tackles an eternal question

Physicist and cosmologist Paul Davies has made an unusual move into the infant discipline of astrobiology. He tells Plus about his interest in the big questions: what is life, how would we recognise aliens - and are they all around us?