Most of us are focussed on what is tangible to us. We hear one another, we know that some kind of communication is happening when a dog barks, but we are less aware of the interactions going on all around us that we don’t perceive. Let’s think again.

Leafcutter ants assiduously farming fungus, bumble bees picking up tiny amounts of electricity given off by flowers – all part of an invisible tapestry of interaction that is unfolding all around us.