Posted inAsk the Ecologist

Ask the Ecologist July 2008


Q:  I’ve read about the chemical Bisphenol A being in some types of plastic. Is Bisphenol A hazardous to our health? What plastics should we avoid? Is this chemical still being put in plastics? 

A: As with most chemical studies, Bisphenol A safety analyses are done using animals, so the results are not conclusive as to the human effect.  But the results do raise some serious concerns.  Potentially harmful effects include permanent changes to genitals, changes in breast tissue that predispose cells to hormones or cancer, and increased prostate weight and sensitivity to cancer.

Posted inAsk the Ecologist

Ask the Ecologist-May 2008

Q: I heard that walking behind a lawn mower for an hour is like hanging your head behind your car tailpipe for 100 miles. Could this be true? – Nick

A: According to the California Air Resources Board (CARB), 2006 lawn mower engines contribute 93 times more smog-forming emissions than 2006 cars. Why are lawn mowers so much worse than cars? Mowers use a single-stroke spark engine with no catalytic converter. That means these engines burn a lot more oil and gas and there is virtually no filter for their emissions.