Efforts to contain the Wuhan coronavirus and fears that it can spread and form a global pandemic have slowed industries around the world.
Shipping is delayed, cars and electronics are stalled on the assembly line, and commodity markets around the world are predicting losses because of the virus. Fears around the virus even have Olympic officials worried that it could impact Tokyo's planning for the summer games scheduled for the end of July, according to CNN.
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A fern species that flourishes in the mossy slopes of an open pit copper mining site in Surigao del Norte, a province in Mindanao. Teresita Perez / Mongabay<p>"We are interested in metallophytes … plants that grow on mining areas," Claveria says. "While analyzing all these plants, we decided that fern is the most suitable for our study because they have higher amounts of absorbed copper and arsenic and other metals."</p><p>The decision to narrow down to ferns came with scholarly backing: the <em>Pteris</em> genus, which includes around 300 species of ferns, feature other popular metallophytes that absorb arsenic. But unlike other widely researched species, <em>P. melanocaulon</em> was mostly unknown, in part due to the scarcity of research journals on the plant. Existing surveys conducted by the team across various large- and small-scale mining sites showed that it only proliferates in two areas in the Philippines.</p><p>"When we focused on ferns, there was one that stood out: the <em>P. melanocaulon</em>, which we didn't see in any other mining sites we surveyed," Claveria says. "We found it in Surigao [del Norte] and later on, in Carmen [in Cebu province] … and this fern happens to grow in areas [within these sites] that are supposedly barren."</p><p>The mossy open slopes left behind by open pit mines, notorious for their high levels of arsenic and copper concentrates, were the perfect breeding grounds for <em>P. melanocaulon</em>, which thrive in lush clusters that overpower the other plants in the Surigao del Norte mining site, Claveria says. Curious about the fern, they recovered samples and conducted initial tests to measure its copper absorption capabilities in 2014.</p><p>The results showed that the plant's roots have "anomalously high" concentrations of copper, Claveria says. After publishing their findings in the <em>International Journal of Phythoremediation</em> in 2015, the team expanded their research on the plant and threw arsenic into the mix.</p>
Rene Claveria and Teresita Perez examining plants in Surigao del Norte. Teresita Perez / Mongabay<p>The logic was since the fern survives alongside other species that are known arsenic metallophytes, maybe it could also absorb arsenic.</p><p>After collecting another set of samples, they conducted a series of tests that verified their hypothesis: the fern does indeed absorb the toxic mineral and stores it in its stems and leaves. They took the research a little further and funded a greenhouse to propagate spores of <em>P. melanocaulon</em> at Xavier University in Cagayan de Oro province, where they experimented with the potted plants.</p><p>They added different concentrations and solutions of arsenic to uncontaminated soil in a series of experiments that lasted for six weeks. The plant's ability to absorb arsenic varied, adjusting to the concentration of the element in the soil, much to the researchers' surprise. The team noted two important observations: that the fern contained more arsenic concentrate than the soil it was planted on, and that despite exposure to high levels of arsenic, it showed no symptoms of toxicity.</p>
Rene Claveria collecting soil samples in Surigao del Norte. Teresita Perez / Mongabay<p>"If you use the ferns to clean up arsenic, which is very toxic, there could be colonization or succession of plants," Perez says. "Eventually, a year after or after one and a half years, you can already plant some high value crops in the area."</p><p>With the protocol in the propagation of the fern species in the books, Perez says the possibility of using the fern to rehabilitate mining soil on a large-scale project is possible. But first, she says, decision-makers should be aware of metallophytes — and that there are indigenous plants that can be used as natural remedies to alleviate mineral-heavy soils.</p><p>"We have to recommend to our policymakers the use of indigenous plant materials to actually clean up arsenic-contaminated areas," Perez says. "In the past, rehabilitating mining sites involved planting invasive species — that was really a wrong move. But now, we're propagating the idea of indigenous and endemic species so these areas can develop new ecosystems."</p>
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More and more homeowners in Raleigh, NC, have embraced renewable energy like solar power. This popular option allows residents to fuel their homes cleanly and effectively, minimizing their home's environmental footprint while lowering their monthly utility bills. What are the best solar companies in Raleigh, NC? We'll show you the top options, plus provide important information on solar panel systems, federal tax credits, and more.
Less than a week before the new school year, the Detroit Public Schools Community District (DPSCD) announced Wednesday it would shut off drinking water in all schools after tests at 16 turned up high levels of copper or lead, The Detroit News reported Wednesday.
In a stunning reversal, the U.S. Environmental Protection Agency (EPA) said it is suspending its effort to reverse an Obama-era plan to restrict mining in Bristol Bay, Alaska based on a controversial mine project's risks to the region's important salmon fisheries and natural resources.
The unexpected move from President Trump's pro-business administration was a blow to Pebble Limited Partnership, a subsidiary of Canadian mining company Northern Dynasty Minerals. The mine developer is proposing to extract one of the world's largest copper and gold deposits from the pristine watershed. Shares fell as much as 26 percent on Monday following the EPA's surprise decision.
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