There are sounds no human ear can hear, scents no-one can smell, colours our eyes cannot detect, waves of radiation that pass right through us without our noticing, but known and used by many different animal species. They have dangers as well as uses, but are vital to all life on Earth. This fascinating unseen and secret world is revealed in Catherine Barr's latest book. Fourteen colorful spreads display the impact on human and animal life of microwaves;...