The achievements and excitement of chemistry has made a huge impact on human progress in the 20th century. This book describes the key developments in the molecular sciences in recent years and those likely to happen in the near future. These include the many remarkable discoveries made in the life sciences. The book also explains now chemistry is actually carried out methods of making and analyzing molecules, calculating these properties and studying how and why chemical reactions occur. The book is written in clear, accessible language and is fully illustrated with magnificent pictures.