The strongest construction of the Overlap Thesis forms the foundation for the classical naturalism of Aquinas and Blackstone. Aquinas distinguishes four kinds of law: (1) eternal law; (2) natural law; (3) human law; and (4) divine law. Eternal law is comprised of those laws that govern the nature of an eternal universe; as Susan Dimock (1999, 22) puts it, one can "think of eternal law as comprising all those scientific (physical, chemical, biological, psychological, etc.) 'laws' by which the universe is ordered." Divine law is concerned with those standards that must be satisfied by a human being to achieve eternal salvation. One cannot discover divine law by natural reason alone; the precepts of divine law are disclosed only through divine revelation.
The irradiation process is not directly related to nuclear energy , but does use radioactive isotopes produced in nuclear reactors . Cobalt-60, for example does not occur naturally and can only be produced through neutron bombardment of cobalt-59 . Ionizing radiation at high energy levels is hazardous to life (hence its usefulness in sterilisation); for this reason, irradiation facilities have a heavily shielded irradiation room where the process takes place. Radiation safety procedures are used to ensure that neither the workers in such facilities nor the environment receives any radiation dose above administrative limits. Irradiated food does not and cannot become radioactive, and national and international expert bodies have declared food irradiation as wholesome.   However, the wholesomeness of consuming such food is disputed by opponents  and consumer organizations.  National and international expert bodies have declared food irradiation as "wholesome"; organizations of the United Nations , such as the World Health Organization and Food and Agriculture Organization , endorse food irradiation. International legislation on whether food may be irradiated or not varies worldwide from no regulation to full banning.  Irradiation may allow lower-quality or contaminated foods to be rendered marketable.
Contraception: The Real Story is a resource from the St.
Augustine Foundation to help you with your educational efforts in defense of God's vision of human sexuality, marriage, conjugal love and responsible parenthood and the virtue of chastity. View at: https:///playlist?list=PL67kelLVRuQGryssCNQ4QKuxHwZi_qYr0 .
This sixteen-part video educational resource is helpful for parents, diocesan
staff (., Marriage and Family Life, NFP, Pro-Life Activities, and Youth
Ministry), teachers, Catholic physicians, and parents. Developed by the staff
of the St. Augustine Foundation (SAF), the text was written in consultation
with a variety of national NFP educators and physicians. The SAF series provides: a summary of key Catholic teaching on
marriage, conjugal love and responsible parenthood; an overview of human
reproduction; a summary of the facts about various artificial contraceptives
and their many negative side effects; and a
discussion on the virtue of chastity. The resource is also available in a PowerPoint
presentation. Video, script, and graphics are available free of charge to diocesan
staff. For more information, contact: John E. Fitzgerald, Director, The St. Augustine Foundation; 914-613-5510; jefitzgerald@ .