This site from the Duke University Department of Chemistry has links to lots of information on careers for those interested in chemical processes. You'll be surprised at the many fields in which a knowledge of chemistry can be put to use, including research, biotechnology, library science, education, and law. If you are interested in both chemistry and biology, this might be the field for you.
Toxicologists study the effects of chemical poisons on living systems.
This site will familiarize you with the field and provide you with links to other toxicology sites. There's information here on both fields because the requirements and job opportunities are similar. Both fields require strong chemistry and biology skills and may be carried out in research, industrial, clinical, or regulatory institutions. Dr. Craik is a researcher at the University of California in San Francisco and this is the home page for his lab. Visit this site to learn more about Dr. Craik's research and the people who work with him.