Dear EarthTalk: I recently saw an article extolling the virtues of natural gas as an abundant, inexpensive and domestically produced automotive fuel. Is this going to be the automotive fuel of the future and how green is it? -- Jason Kincaide, New Bedford, MA
Dear EarthTalk: Renewable energy production in the solar and wind markets currently receives about $7 billion in government subsidies annually, but is still not competitive against fossil fuels on a large scale. To what extent should the U.S. continue to prop up these industries as they compete against dirty energy?-- Jack Morgan, Richmond, VA
Dear EarthTalk: How do I learn about what pesticides may be on the food I eat?-- Beatrice Olson, Cleveland, OH
Along with the rise in the popularity of organic food has come an increased awareness about the dangers lurking on so-called “conventionally produced” (that is, with chemical pesticides and fertilizers) foods.
Dear EarthTalk: A few years back a study found over 200 chemicals in the umbilical cords of newborns, particularly African American, Asian and Hispanic babies. What are the causes of this phenomenon and what can be done about it? -- Bettina Olsen, New York, NY
Dear EarthTalk: I understand there is good news about the recovery of bird species like the Peregrine Falcon, Bald Eagle and others owed to the 1972 ban on DDT. Can you explain? -- Mildred Eastover, Bath, ME