Tuna Turnaround

Lower Mercury Levels Tied to Drop in Coal Emissions




holbox/Shutterstock.com

Levels of highly toxic mercury contamination in Atlantic bluefin tuna are rapidly declining, a trend that has been linked to reduced mercury emissions in North America, according to a new study published in Environmental Science & Technology. Average mercury concentrations dropped by more than 2 percent per year, for a total decline of 19 percent between 2004 and 2012.

Scientists believe that most of that reduction has occurred because of a shift away from coal, the major source of mercury emissions, to natural gas and renewable fuels. Pollution control requirements imposed by the federal government have also cut mercury emissions, but these have been rolled back or eliminated by President Trump’s commitment to “bring back coal.”


Source: Scientific American


This article appears in the August 2017 issue of Natural Awakenings.

Edit ModuleShow Tags

Related Content

City Homesteading

Across the country, people in communities of all sizes are crafting ways to grow food, build eco-homes and live in harmony with the environment and each other.

Hemp CBD Addresses Stress and Combats Inflammation

Hemp-derived cannabidiol (CBD) extract is proving to be of medical value.

Big Breakfast, Lower Body Mass

People that make breakfast their largest meal of the day have lower body mass, while those that make dinner the biggest meal are likely to weigh more, a recent study concluded.

Zinc Inhibits Throat Cancer

University of Texas researchers have found that zinc supplements can inhibit or slow the growth of esophageal cancer cells.

Moderate Exercise Guards Against Depression

A mere one hour of exercise a week reduced depression in 12 percent of Norwegian study participants.

Add your comment: