Air pollution delivers smaller babies

Study of 3 million infants suggests connection between inhaled particles and birth weight.

Pregnant women who have been exposed to higher levels of some types of air pollution are slightly more likely to give birth to underweight babies, a large international study has found. The results are published online today inEnvironmental Health Perspectives1.

Low birth weight — defined as a newborn baby weighing less than 2.5 kilogrammes … Read the rest

River metals linked to tar sand extraction

Researchers find that pollutants in Canada’s Athabasca River are not from natural sources.

Oil-mining operations in Canada’s main tar sands region are releasing a range of heavy and toxic metals — including mercury, arsenic and lead — into a nearby river and its watershed, according to a new study.

Research published online yesterday in the Proceedings of the National Academy of Sciences shows that 13 elements classified as priority pollutants … Read the rest