Study Finds 8 Fracking Chemicals Toxic to Humans
Fracking is once again in trouble. Scientists have found that what gets pumped into hydrocarbon-rich rock as part of the hydraulic fracture technique to release gas and oil trapped in underground reservoirs may not be entirely healthy.
Environmental engineer William Stringfellow and colleagues at Lawrence Berkeley National Laboratory and the University of the Pacific told the American Chemical Society meeting in San Francisco that they scoured databases and reports to compile a list of the chemicals commonly used in fracking.
Such additives, which are necessary for the extraction process, include: acids to dissolve minerals and open up cracks in the rock; biocides to kill bacteria and prevent corrosion; gels and other agents to keep the fluid at the right level of viscosity at different temperatures; substances to prevent clays from swelling or shifting; distillates to reduce friction; acids to limit the precipitation of metal oxides.
Some of these compounds—for example, common salt, acetic acid and sodium carbonate—are routinely used in households worldwide.
But the researchers assembled a list of 190 of them, and considered their properties. For around one-third of them, there was very little data about health risks, and eight of them were toxic to mammals.
Fracking is a highly controversial technique, and has not been handed a clean bill of health by the scientific societies.
Seismologists have warned that such operations could possibly trigger earthquakes, and endocrinologists have warned that some of the chemicals used are known hormone-disruptors, and likely therefore to represent a health hazard if they get into well water.
Industry operators have countered that their techniques are safe, and involve innocent compounds frequently used, for instance, in making processed food and even ice cream.
But the precise cocktail of chemicals used by each operator is often an industrial secret, and the North Carolina legislature even considered a bill that would make it a felony to disclose details of the fracking fluid mixtures.
So the Lawrence Berkeley team began their research in the hope of settling some aspects of the dispute.
Dr Stringfellow explained: “The industrial side was saying, ‘We’re just using food additives, basically making ice cream here.’ On the other side, there’s talk about the injection of thousands of toxic chemicals. As scientists, we looked at the debate and asked, ‘What’s the real story?’”
The story that unfolded was that there could be some substance to claims from both the industry and the environmentalists. But there were also caveats. Eight substances were identified as toxins. And even innocent chemicals could represent a real hazard to the water supply.
“You can’t take a truckload of ice cream and dump it down a storm drain,” Dr Stringfellow said. “Even ice cream manufacturers have to treat dairy wastes, which are natural and biodegradable. They must break them down, rather than releasing them directly into the environment.
“There are a number of chemicals, like corrosion inhibitors and biocides in particular, that are being used in reasonably high concentrations that could potentially have adverse effects. Biocides, for example, are designed to kill bacteria—it’s not a benign material.”
YOU ALSO MIGHT LIKE
Britain's Prince William interviewed famed broadcaster David Attenborough on Tuesday at the World Economic Forum's annual meeting in Switzerland.
During the sit-down, the 92-year-old naturalist advised the world leaders and business elite gathered in Davos this week that we must respect and protect the natural world, adding that the future of its survival—as well as humanity's survival—is in our hands.
What's more, the accounting firm predicts that another 21 million electric cars will be on the road globally over the next decade due to growing market demand for clean transportation, government subsidies, as well as bans on fossil fuel cars.
By Matthew Savoca
Plastic pollution in the world's oceans has become a global environmental crisis. Many people have seen images that seem to capture it, such as beaches carpeted with plastic trash or a seahorse gripping a cotton swab with its tail.
Greenland is melting about four times faster than it was in 2003, a new study published Monday in the Proceedings of the National Academy of Sciences found, a discovery with frightening implications for the pace and extent of future sea level rise.
"We're going to see faster and faster sea level rise for the foreseeable future," study lead author and Ohio State University geodynamics professor Dr. Michael Bevis said in a press release. "Once you hit that tipping point, the only question is: How severe does it get?"
Finally, some good news about the otherwise terrible partial government shutdown. A federal judge ruled that the Trump administration cannot issue permits to conduct seismic testing during the government impasse.
The Justice Department sought to delay—or stay—a motion filed by a range of coastal cities, businesses and conservation organizations that are suing the Trump administration over offshore oil drilling, Reuters reported. The department argued that it did not have the resources it needed to work on the case due to the shutdown.
Most people have heard of the Amazon, South America's famed rainforest and hub of biological diversity. Less well known, though no less critical, is the Pantanal, the world's largest tropical wetland.
Like the Amazon, the Pantanal is ecologically important and imperiled. Located primarily in Brazil, it also stretches into neighboring Bolivia and Paraguay. Covering an area larger than England at more than 70,000 square miles, the massive wetland provides irreplaceable ecosystem services that include the regulation of floodwaters, nutrient renewal, river flow for navigability, groundwater recharge and carbon sequestration. The wetland also supports the economies of the four South American states it covers.
By Andrea Germanos
Organizers said 35,000 people marched through the streets of the German capital on Saturday to say they're "fed up" with industrial agriculture and call for a transformation to a system that instead supports the welfare of the environment, animals and rural farmers.
By Patrick Rogers
If you have ever considered making the switch to an environmentally friendly electric vehicle, don't drag your feet. Though EV prices are falling, and states are unveiling more and more public charging stations and plug-in-ready parking spots, the federal government is doing everything it can to slam the brakes on our progress away from gas-burning internal combustion engines. President Trump, likely pressured by his allies in the fossil fuel industry, has threatened to end the federal tax credits that have already helped put hundreds of thousands of EVs on the road—a move bound to harm not only our environment but our economy, too. After all, the manufacturing and sale of EVs, hybrids, and plug-in hybrids supported 197,000 jobs in 2017, according to the most recent U.S. Energy and Employment Report.