What do contaminants in cord blood and climate change have in common? One answer: fossil fuels. Last week, a study published in Environmental Science and Technology showed how 87 commonly found chemicals pass efficiently from mother to fetus during pregnancy, and a vast majority of those chemicals are derived from petroleum. Last month, at the UN climate change talks in Cancun, side events sponsored by NGOs highlighted rising health concerns for children and other vulnerable populations related to climate change. Climate change, as scientists have demonstrated repeatedly, has in large part been catalyzed by the widespread development and use of petrochemicals and their by products, which are fast changing the delicate balance of our earth’s systems. In other words, fossil fuels are us, inside and out – with huge economic and social consequences for human and ecological health.