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Are You Getting the Right Amount of Fluoride for Good Dental Health?

Are you getting enough--or too much--fluoride for good dental health? While the right amount of fluoride can prevent tooth decay, too much can lead to serious health issues, including eczema, osteoporosis, and even bone cancer.

Global Water Supply Drying Up as Population Grows

Water covers 70 percent of the Earth's surface, yet billions of people lack access to clean water. Population growth in many water-stressed countries, plus excess water use in developed countries, is shrinking water resources worldwide and raising fears about water scarcity. Learn what you can do to help.

Malnutrition, Pollution and Population Growth Spur Increase of Deadly Diseases

Global pollution combined with population growth is leading to widespread malnutrition and making millions of people more susceptible to a range of infectious diseases--from measles and influenza to malaria--according to researchers at Cornell University. Malnutrition currently kills 6 million children annually, and affects 57 percent of the world's people.

Gerald Ford: President and Park Ranger

President Gerald Ford, who died December 26, 2006 at the age of 93, was the only American president ever to have served as a park ranger in the National Park Service.

Why is Chlorine Added to Tap Water?

Chlorine in tap water destroys many disease-causing bacteria that threaten human health, but it may lead to other health problems. Learn how you can benefit from chlorine while avoiding its potentially harmful effects.

How to Recycle Different Types of Plastic

The confusion over what we can and cannot recycle continues to confound consumers. Plastics are especially troublesome, as different types of plastic require different processing to be reformulated and re-used as raw material. Some municipalities accept all types of plastic for recycling, while others only accept jugs, containers and bottles stamped with certain numbers. But what do the numbers really mean, and how can consumers learn the code?

Fun Facts About Mistletoe

Everyone knows about the power of mistletoe at Christmas, right? It makes holiday romance democratic by making everyone equally kissable. But there is more to mistletoe than kissing and holiday merriment.

State of the Union: Obama Urges Clean-Energy Economy

One year after taking office, President Barack Obama outlined his vision for a clean-energy economy in his first State of the Union address.

State of the Union 2012: Clean Energy and an Economy Built to Last

In his third State of the Union address, President Barack Obama shared his plan for rebuilding the U.S. economy and his vision of a return to basic American values.

Obama Kills Keystone XL Pipeline Project – For Now

President Barack Obama rejected TransCanada's application for a permit to build the $7 billion Keystone XL Pipeline from the tar sands oil fields of Canada to U.S. refineries along the Gulf of Mexico.

Obama Links Energy, Economy in Second State of the Union

In his second State of the Union address, President Barack Obama told the nation that America's economic future is linked to innovation and clean energy, but he renewed his support of clean coal and nuclear power.

EPA Issues First National Standards to Reduce Mercury from Power Plants

The EPA issued the first national standards for mercury and other toxic emissions from U.S. power plants, which are expected to bring enormous economic and public health benefits.

Where to Find Eco-Friendly Carpet Cleaning Options

Traditional carpet cleaning solution contains chemicals that can damage health and the environment. Learn where to find healthier professional and do-it-yourself carpet cleaning options.

Real Sponges or Artificial Sponges: Which is Better for the Environment?

A sponge is a sponge, right? Well, no. Some sponges are living organisms that have been harvested for centuries and used in the ways we know them best. Others are artificial replicas, made from wood pulp and other ingredients. Which is better for the environment?

What Does "Biodegradable" Claim Really Guarantee?

Many products claim to be biodegradable, but what does that label actually mean? With no legal definition for the term and no clear standards for enforcement, consumers have no guarantee that "biodegradable" products are good for the environment.

What are the Best Eco-Friendly Dishwasher and Laundry Soaps?

Keeping your clothes and dishes clean is just part of living a healthy life, but are you using dishwasher and laundry soaps that put the envrionment at risk? Phosphates and other chemicals in many dishwasher and laundry soaps can pollute lakes and waterways, kill many plant and animal species and pose human health risks. Learn about the alternatives.

The Politics of Poison: Many Americans Still Breathe Toxic Air

The Clean Air Act has given Americans cleaner air overall, but many U.S. communities still have local polluters that spew toxic chemicals and other pollutants into the air, poisoning residents and confounding state and federal regulators.

Global Population Hits 7 Billion

World population reached an all-time high 7 billion in 2011, and the population is still growing rapidly. What effects can we expect from having 7 billion people living on Earth?

Eco-Friendly Car Washing: Is It Better to Wash Cars at Home or at the Car Wash?

What is the best way to wash your car and keep the environment clean at the same time? Is it better to break out the bucket and sponge at home or drive through a commercial car wash? Learn the pros and cons of commercial car washes versus scrubbing your car in your driveway.

The Benefits of Aluminum Recycling: Why Recycle Aluminum?

Recycling aluminum saves energy, is good for the environment, and provides funds for many community programs and projects. Learn about the other benefits of aluminum recycling.

The Benefits of Paper Recycling: Why Recycle Paper?

Paper recycling has many benefits, from saving energy to reducing greenhouse gas emissions. Why recycle paper? Get the details.

In Defense of Car Pools

Are car pools a valuable part of a comprehensive transportation solution, or a failed initiative? Two environmental experts square off on the subject.

Expediting U.S. Oil Production Will Not Lower Fuel Prices

President Obama's move to open offshore drilling sites and take environmental shortcuts to expedite U.S. oil production won't lower gasoline prices or decrease American dependence on foreign oil.

How Dangerous is Atrazine?

Atrazine is a widely used herbicide that is banned in Europe, but often found in U.S. drinking water supplies. Growing evidence about the health effects of atrazine are leading many people to question its safety.

Nations of the World Pledge to Conserve Biodiversity

The Nagoya Protocol and other strategic plans to conserve biodiversity were adopted by 193 nations in October 2010 in Nagoya, Japan, but 50 countries must ratify the Nagoya Protocol by February 1, 2012, before it can take effect.

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