Walter Brasch: A new Pennsylvania law endangers public health by forbidding health care professionals from sharing information they learn about certain chemicals and procedures used in high volume horizontal hydraulic fracturing.
Carole Bartolotto: The problem with concluding that GMOs are safe is that the argument for their safety rests solely on animal studies. These studies are offered as evidence that the debate over GMOs is over. Nothing could be further from the truth.
Steve Hochstadt: The Republicans in Congress, virtually all of whom publically deny that climate change is occurring, have just proposed a budget which cuts or reverses all the programs which might reduce the pace of warming.