- also includes a 72 page course guidebook
Product Description
12 lectures on 2 dvd’s/30 minutes per lecture… More >>
» Read more: The Teaching Company-the Great Courses- Earth’s Changing Climate
The Teaching Company-the Great Courses- Earth’s Changing Climate
Partially Halogenated Chlorofluorocarbons : Environmental Health Criteria Series No 126
Product Description
Evaluates the risks to human health and the environment posed by two partially halogenated chlorofluorocarbons: dichlorofluoromethane (HCFC 21) and chlorodifluoromethane (HCFC 22). These two methane derivatives were selected for evaluation because of their potential use as substitutes for those fully halogenated chlorofluorocarbons that are being phased out as a result of the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer. The evaluation is intend… More >>
» Read more: Partially Halogenated Chlorofluorocarbons : Environmental Health Criteria Series No 126
Global Warming and the Greenhouse Effect
Description
Learn what creates the Greenhouse Effect and discover how it affects weather patterns all over the world. Understand that we must take the threat of global warming seriously to ensure the continued survival of our species…. More >>