Treaty to Curb Mercury Pollution

More than 140 nations agree to a plan to limit global mercury emissions.

Written byJef Akst
| 2 min read

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WIKIMEDIA, MATERIALSCIENTISTAfter 4 years of negotiations and an all-nighter this past weekend, delegates in Geneva came to a consensus at 7 a.m. Saturday morning (January 19): more than 140 nations agreed to enter the Minimata Convention, a treaty to regulate the use of mercury in everyday commodities, such as batteries, fluorescent lamps, and cosmetics, as well as mercury emissions from coal power plants, gold mines, and certain types of factories. Other sources of mercury that the delegates discussed include dental fillings, medical thermometers, and blood pressure devices. The treaty, named for the Japanese city that suffered one of the worst bouts of mercury poisoning, aims to significantly reduce global mercury emissions by 2020.

“After complex and often all night sessions here in Geneva, nations have today laid the foundations for a global response to a pollutant whose notoriety has been recognized for well over a century,” Achim Steiner, executive director of the UN Environment Programme, told BBC News. “Everyone in the world stands to benefit.”

While the treaty was welcomed by researchers and non-governmental organizations (NGOs) as a needed first step, some worry that it is not enough. The Zero Mercury Working Group, a coalition of non-governmental organizations that lobbies for strong mercury protection measures, for example, pointed out that limits on the use of mercury in coal power plants—one of the two main sources of mercury contamination—won't go into effect for 5 to 10 years.

“[A]s it ...

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  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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