Materials, products and services - the Green Guide Online provides details of the life cycle environmental impacts of construction materials and components, and the Green Book is a free online database of products and services.
Spermicides are used globally for birth control, with or without condoms. As the only means of birth control, spermicides are rarely effective. However, in conjunction with condoms, spermicides are somewhat effective in birth control.
Drink and drugs can damage men's sperm, study suggests. Men should not smoke, drink or take unnecessary drugs if they are planning to become fathers to avoid causing health problems for their children, a health expert has warned. Scientists found that toxic chemicals can damage sperm, which then pass altered genes onto babies.