Solid waste policy in the United States produce large amounts of waste in small areas. For example, EPA reports that a single dairy cow produces approximately 120 pounds of wet manure per day equaling to that of 20-40 people. The main problems of animal waste mismanagement are environmental, especially water pollution. Industrial waste consists of a significant amount of solid waste. EPA reported that each year United States industrial facilities generate and dispose of approximately 7.6 billion tons of industrial solid waste based on 1980s figures. This figure includes waste generated from 17 industrial manufacturers of organic chemicals, inorganic chemicals, iron and steel, plastics and resins, stone,
One Laptop per Child day. The latter income segment would have to spend more than a quarter of its annual income to purchase a single laptop, while the global average of ICT spending is 3% of income. Empirical studies show that the borderline between ICT as a necessity good and ICT as a luxury good is roughly around the "magical number" of US$10 per person per month, or US$120 per year. John Wood, founder of Room to Read (a NPO which builds schools and libraries), emphasizes affordability and scalability over high-tech solutions. While in favor of the One Laptop per Child initiative for providing