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Invironment issues : Earth Talk Q & A

Last Updated: Mar 2, 2008

Invironment issues : Earth Talk Q & A
Solar panels on roadsides, powering individual streetlamps or signs.

The concept of using road surfaces to generate clean solar power is actually already moving beyond the idea stage. Roads absorb heat from the sun every day and are usually free of sightline obstructions that could otherwise block the transmission of light rays. And if the roads built for cars and driving are partly to blame for global warming, why not make them part of the solution too?

Mar 2, 2008

Invironment issues : Earth Talk Q & A
Do air fresheners contain chemicals that can cause health problems when inhaled

Like most air fresheners, many scented candles contain and release phthalates, potentially harmful chemicals that have been linked to the disruption of hormonal systems and other health problems in people exposed to them. Burning candles can also emit small amounts of acetaldehyde, formaldehyde and naphthalene, organic chemicals that are also potentially harmful and that can leave nasty black soot deposits on floors and other surfaces.Mar 2, 2008

Invironment issues : Earth Talk Q & A
Dear EarthTalk:

Dear EarthTalk: Bottled water companies would have us all believe that tap water is unsafe to drink. But I’ve heard that most tap water is actually pretty safe. Is this true?
Jul 23, 2007

Invironment issues : Earth Talk Q & A
What is "light pollution?" Is it really a factor in breast cancer?

The glow of city lights blotting out stars in the night sky has frustrated many a stargazer, but recent studies have shown that "light pollution"- defined as excess or obtrusive light at night - can actually have serious health effects. Researchers have found that exposure to bright nocturnal light can decrease the human body's production of melatonin, a hormone secreted at night that regulates our sleep-wake cycles. And decreased melatonin production has in turn been linked to higher rates of breast cancer in women.
May 20, 2007

Invironment issues : Earth Talk Q & A
Are there organizations that specifically address the environmental challenges faced by poor and minority communities?

When sociologist Robert Bullard began uncovering the proximity of hazardous waste sites to minority neighborhoods across the American South during the course of his graduate research in the 1980s, the “environmental justice” movement was born. In the intervening two decades, environmental and human rights advocates around the U.S. and the world have launched thousands of nonprofit community groups to battle so-called “environmental racism”—whereby otherwise distressed and poor minority communities are disproportionately exposed to the brunt of industrial pollution in their own backyards.May 14, 2007

Invironment issues : Earth Talk Q & A
What is "ground level ozone" and why is that a problem?

2Ozone (O3) is a colorless gas formed when three atoms of oxygen bond together. About 90 percent of the Earth’s ozone forms naturally in the stratosphere, dozens of miles above ground. It forms the protective layer that shields us from overexposure to the sun’s radiation, and is therefore considered “good” ozone.
May 14, 2007

Invironment issues : Earth Talk Q & A
Did Exxon/Mobil really pay scientists and economists to write articles trying to de-bunk global warming?

Dear EarthTalk: Did Exxon/Mobil really pay scientists and economists to write articles trying to de-bunk global warming? – Rosemary R., via e-mail

A February 2007 report in the British newspaper, The Guardian, fell like a ton of bricks on efforts by Exxon/Mobil, the world’s largest and most profitable oil company, to repair its damaged environmental reputation. According to the report, the Exxon-financed American Enterprise Institute (AEI), a conservative Washington, D.C. “think tank,” offered scientists and economists $10,000 each, plus expenses, to write articles undercutting the dire findings of the United Nations’ Intergovernmental Panel on Climate Change (IPCC) about the extent and impacts of human-caused global warming.
Apr 29, 2007

Invironment issues : Earth Talk Q & A
Are we making progress in cleaning up America’s rivers?

Dear EarthTalk: Are we making progress in cleaning up America’s rivers? – Maria B., via e-mail

When the Cuyahoga River caught fire in downtown Cleveland in June of 1969, a nation already becoming more aware of environmental problems took note. Across the country, people were fed up with bans on swimming and fishing due to growing pollution levels. And rampant logging was clogging many a remote river system with soil and debris, making them uninhabitable by the fish that had evolved there for eons.
Apr 29, 2007

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