tailieunhanh - Healthy schools lessons for a clean educational environment

Grasslands occur on every continent except Antarctica, and constitute about 34 percent of the global terrestrial carbon stock. Changes in grassland vegetation due to overgrazing, conversion to crop land, desertification, fire, fragmentation, and introduction of non‐native species affect their carbon storage capacity, and may in some cases even lead to grasslands becoming a net source of CO2. For example, they may lose 20 to 50 percent of their soil organic carbon content through cultivation, soil erosion, and land degradation. Burning of biomass, especially in tropical savannas, contributes over 40 percent of gross global carbon dioxide emissions. Oceans, too, are substantial reservoirs of carbon, holding approximately 50 times. | healthy schools lessons for a clean educational environment United States Environmental Protection Agency New England Introduction More than 53 million children and 6 million adults in the United States spend their days in our elementary and secondary schools. Reducing environmental risks inside these buildings is critical to maintaining the public health. Almost all of New England s children will spend a large portion of their childhood in school. To help our children stay healthy we must reduce their exposure to environmental hazards in school environments. When students and their teachers are healthy and comfortable children learn and produce more in the classroom which in turn improves performance and achievement later in life. This brochure can help school employees and parents recognize potential environmental health issues at schools both indoors and outdoors. It includes basic information about a broad range of topics and links to web sites that offer more information and guidance on how to have a healthier school environment and comply with relevant laws. EPA s Healthy School Environments web site provides access to programs that help prevent and resolve environmental issues in schools. ne schools Table of Contents I. Staying Healthy Indoors. 2 Indoor Air Quality. 2 Mold Moisture. 2 Radon. 2 Volatile Organic Compounds VOCs . 3 Ventilation. 3 Toxics. 4 Asbestos. 4 Lead. 4 Mercury. 4 Chemicals. 5 Pesticides. 5 Polychlorinated Biphenyls PCBs . 6 Drinking Water. 6 II. Staying Healthy Outdoors. 7 Outdoor Air Quality. 7 Ultraviolet Radiation. 7 Diesel School Buses. 8 Oil Storage. 8 III. Go Green at Design Construction and Energy Reuse Recycling Safety and Assessing Your Healthy School IV. 12 Ways to Make your School table of healthy schools .