John Daintith is a contributor to many reference books, including The Facts On File Dictionary of Chemistry for Facts On File/Checkmark Books. Mr. Daintith lives in Aylesbury, England. Jill Bailey is a science writer and editor. She has worked on a number of reference works and is the editor of the Penguin Dictionary of Plant Sciences. Ms. Bailey lives in Witney, England. Robert Hine is the author of The Facts On File Dictionary of Biology for Facts On File/Checkmark Books and is the life-science editor of the Larousse Encyclopedia. Mr. Hine lives in Stafford, England.