By Roddy Scheer and Doug Moss, E - The Environmental Magazine

June 10, 2013 (San Diego) -- Dear EarthTalk: I'm concerned about toxic ingredients in my cleaning supplies, especially now that I have young children. Where can I find safer alternatives?             -- Betsy E., Hartford, CT

It is true that many household cleaners contain potentially toxic substances, so parents especially should make an effort to keep them out of the reach of children or, better yet, replace them with safer alternatives.

April 14, 2013 (San Diego) -- Dear EarthTalk: I know that some of us are genetically predisposed to get cancer, but what are some ways we can avoid known environmental triggers for it?

- B. Northrup, Westport, MA

Cancer remains the scourge of the American health care system, given that four out of every 10 of us will be diagnosed with one form or another during out lifetime. Some of us are genetically predisposed toward certain types of cancers, but there is much we can do to avoid exposure to carcinogens in our environment.

March 16, 2013 (San Diego) -- Dear EarthTalk: I’d like to have a garden that encourages bees and butterflies. What’s the best approach?                                                              

-- Robert Miller, Bakersfield, CA

Attracting bees and butterflies to a garden is a noble pursuit indeed, given that we all depend on these species and others (beetles, wasps, flies, hummingbirds, etc.) to pollinate the plants that provide us with so much of our food, shelter and other necessities of life. In fact, increased awareness of the essential role pollinators play in ecosystem maintenance—along with news about rapid declines in bee populations—have led to a proliferation of backyard “pollinator gardens” across the U.S. and beyond.

January 31, 2013 (San Diego) -- Dear EarthTalk: What is the purpose of National Wildlife Week, which I understand will take place in March 2013?

-- Melissa P., Burlington, NJ

National Wildlife Week is a program of the non-profit National Wildlife Federation (NWF) that is designed around teaching and connecting kids to the wonders of wildlife. Each year, the group picks a theme and provides fun and informative educational materials, curriculum and activities for educators and caregivers to use with their kids.

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

January 7, 2013 (San Diego)--Dear EarthTalk: How is it that climate change is negatively affecting the health of rivers and, by extension, the quality and availability of fresh water?                  -- Robert Elman, St. Louis, MO

Global warming is no doubt going to cause many kinds of problems (and, indeed, already is), and rivers may well be some of the hardest hit geographical features, given the likelihood of increased droughts, floods and the associated spread of waterborne diseases.

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

December 24, 2012 (San Diego)--Dear EarthTalk: It might seem obvious, but what would be the primary benefits of public transit as an alternative to the private automobile if our country were to make a major commitment to it?                                                        -- James Millerton, Armstrong, PA

The benefits of making a major commitment to building up and efficiently managing a larger and more comprehensive public transit network are many.

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

Dear EarthTalk: What is the Burrowing Owl Conservation Network and why is it so important to put so much effort into saving one species?                               -- Ginny Bateman, Portland, OR

November 9, 2012 (California) --  Western burrowing owls (Athene cunicularia) are tiny, long-legged members of the owl family, native to the Americas and preferring open landscapes where they can dig new holes or use existing ones (such as abandoned prairie dog, skunk or armadillo homes) to nest and rear their young. Unlike most other owl species, these small but charismatic birds are more often seen out and about during daylight hours, but they are most active and do their primary feeding at night, preferring a diet of small rodents and large insects.

November 3, 2012 (San Diego) -- Dear EarthTalk: I heard that the Arctic summer sea ice is at its lowest level since we began recording it. What are the implications of all this melting?   -- Jo Shoemaker, Bowie, MD

It is true that on September 16, 2012 the world reached a new low: The National Snow and Ice Data Center (NSIDC) reported that the extent of sea ice across the Arctic was at its lowest since satellite record-keeping began in 1979. On that date the sea ice reached its summer minimum, 1.32 million square miles, half of what the average size of summer ice was between 1979 and 2000, and almost 20 percent lower than the previous record minimum of 1.61 million square miles set on Sept. 18, 2007. NSIDC added that, despite especially warm conditions in 2007 being much more favorable for sea ice loss than this year, the thinning of sea ice due to climate change has made the ice more vulnerable to breakup and melting.

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

October 10, 2012 -- Dear EarthTalk: Given that the presidential election is just around the corner, what can you tell me about each candidate’s environmental track record and positions?          -- Jane Miller, Chicago, IL

Just because the environment is getting short shrift this election season due to our nation’s lingering economic woes doesn’t mean that candidates Obama and Romney can ignore the issue.

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

September 24, 2012 -- Dear EarthTalk: What is the scientific consensus on all the extreme weather we’ve been having—from monster tornadoes to massive floods and wildfires? Is there a clear connection to climate change? And if so what are we doing to be prepared?                                -- Jason Devine, Summit, PA

E - The Environmental Magazine

Written and edited by Roddy Scheer and Doug Moss

September 11, 2012 -- Dear EarthTalk: Which are the most eco-friendly and non-toxic (to people, cats and sanitation systems) cat litters? ­                                                                       -- Sam Barnes, Macon, GA

It makes sense that environmentally enlightened cat owners would want cat litter made from natural products that will not potentially compromise their health or that of their beloved pets. Many mass market cat litters contain significant amounts of silica dust which has been linked to upper respiratory issues in cats and even humans. Likewise, the chemical fragrances in many cat litters can also be toxic to cats.