This book aims to demystify the law for scientists and instructing officials by exploring the science and legal concepts of risk and precaution for national legislation to facilitate safe trade in agricultural products (in compliance with international trade rules). The book is not meant to supplant the many authoritative titles on legislative drafting, but provide some practical exercises on instructions and drafting for this area of law. The book also includes some important factors in legal reform, such as the audience for and access to legislation. It, therefore, has the potential to be a valuable resource for coordinated training of instructors and drafters by helping to secure a robust two-way dialogue between them.