Encyclopedia of Earth Water Treatment Plant Early American settlers tookwater quality for granted. In lightly settled towns and villages inthe 17th and 18th centuries, people found clean drinking water innearby streams and lakes, as well as in wells they dug to accessgroundwater. However, as population densities increased in urbancenters, many water supplies became contaminated, and people fellill as a result of drinking the impure water. Today, in developing countries around theworld, disease-causing water-borne microbes and chemical contaminantssicken millions of people each year. In developed countries such as the United States, governmentagencies require that the approximately 160,000 water treatmentfacilities supplying drinking water nationwide meet strict safetyand quality standards. Public drinking water generallycomes to a treatment facility either from underground aquifers orfrom surface streams and reservoirs such as the one featured inthis video segment.
Teacher Guides By Film - Poisoned Waters | Teacher Center | FRONTLINE Video Segment Themes New chemicals from everyday products have been detected in drinking water sources. Testing of treated has shows chemicals are present in “finished” water that is delivered to the tap. Scientists believe these chemicals – referred to as “endocrine disruptors” – has caused genetic mutations in fish. There also aren’t any established safety standards to regulate these chemicals. Discussion Questions Poisoned Waters explores how scientists are finding genetically mutated marine life caused by “endrocrine disruptors”—chemicals from consumer products, pharmaceuticals. Where does waste from our toilets and sink wind up? Go Further Featured Lesson Plan: “What Can Students Do? Web-exclusive Resources: What’s Safe to Eat and Drink?
Simply Geology Weather New Englanders have a saying: "If you don't like the weather, just wait a minute." Weather forecasts may be more stable in other parts of the world, but the basic idea stands. Weather is dynamic, the product of interacting forces we are only beginning to understand. Witness the weather extremes caused by El Niño in 1997 and 1998. Weather may change on a daily basis, but climate changes over geologic time. Join us as we explore the forces behind the weather. Garbage If your habits resemble those of average Americans, you generate about 4.6 pounds of solid trash per day. This adds up to big trouble for the environment. Americans are generating waste products faster than nature can break them down and using up resources faster than they can be replaced. How can we find ways to meet our current economic and social needs without compromising the ability of our children, and our children's children, to do the same? Our success will depend on understanding the difference between Sustainable practices: practices that provide ongoing economic and social benefits without degrading the environment. In this exhibit, you can find out how to improve next year's environmental record. Start by learning a few facts about solid waste.
One Ocean: The Nature of Things with David Suzuki: CBC-TV One Ocean Download Unity Web Player Get Unity 3D to Play The Unity Web Player enables you to view blazing 3D content created by the Unity gaming engine directly in your browser, and autoupdates as necessary. Download Unity Web Player: Install Now! Experience your 3D interactive online experience with the Unity Web Player It's safe , reliable , and FREE Learn More About Unity Requirements On Windows: 2000/XP/Vista/7 On Mac: OS X 10.3.9 or newer Earth Exploration Toolbook Awarded Science Magazine's Science Prize for Online Resources in Education (SPORE), September 30, 2011 AAAS Press Release What is the Earth Exploration Toolbook? Developed by teams of scientists and educators, the Earth Exploration Toolbook (EET) is a collection of online Earth system science activities. Each activity, or chapter, introduces one or more scientific data sets and analysis tools that enables users to explore some aspect of the Earth system. Within the context of a case study, each chapter guides users through a step-by-step process in which they access data and use analysis tools to explore real issues and questions in Earth system science. Who is it for? Earth Exploration Toolbook chapters are written to the teacher, generally at the secondary and college level. How can I learn more? Come on into the site!
Breathingearth - CO2, birth & death rates by country, simulated real-time TckTckTck | the Global Campaign for Climate Action A History of Climate Science Skeptical Science takes a different approach to Naomi Oreskes' Science paper who sorted her papers into "explicit endorsement of the consensus position", "rejection of the consensus position" and everything else (neutral). In this case, the backbone of our site is our list of climate myths. Whenever a climate link is added to our database, it is matched to any relevant climate myths. Therefore, each link is assigned "skeptic", "neutral" or "proAGW" whether it confirms or refutes the climate myth. This means a skeptic paper doesn't necessarily "reject the consensus position" that humans are causing global warming. It may address a more narrow issue like ocean acidification or the carbon cycle. There are a large number of neutral papers. So yes, categorisation can get a little complicated and I expect there will continue to be discussion on the issue of classification.