Mining in Tasmania raises water pollution concerns to a new high

February 14, 2019 by  
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Tasmania’s water pollution is becoming a major problem for local residents and wildlife. A new study discovered that metal contamination in the state’s lakes are about as high as they get, raising concerns about the quality of water and food obtained from the region. The majority of the contamination can be traced to historic mining operations in Rosebery and Queenstown. The new study, which was conducted by the Australian National University, looked at six lakes in Tasmania, including Perched Lake, Lake Cygnus, Lake Dobson and Dove Lake, and found levels of arsenic, lead, cadmium and copper. Basin Lake and Owen Tarn had the highest levels of water pollution. The levels of contamination are bad enough to equal some of the highest contaminated waterways in the world, including Iran’s Shur River and Pakistan’s Kurang River. “The levels of contamination are really, really high,” the lead scientist on the study, Larissa Schneider. “They need to do research to know what is happening to the fish and if it’s really high… people should not be eating it.” Schneider compared the level of water pollution to what the United States has encountered in some areas of the country. In those cases, local fish populations were severely harmed by the pollutants, which is a major concern because the contamination levels in Tasmania are much higher. Related: California teen finds golf balls are a major source of plastic waste in our oceans Scientists, for example, discovered an alarming amount of lead contamination in Dove Lake, which could affect native organisms. The new research argues that the contaminates were spread via atmospheric transport. Mining operations in the 1930s used open cut mining, a popular practice until it was outlawed by the Environmental Protection Act in the 1970s. Metal contaminates were discovered over 80 miles away from old mining locations, and some of the lakes are in mountainous regions. This suggests that they reached these bodies of water by passing through the air. Will Hodgman, the premier of Tasmania, discussed the new findings and suggested a form of remediation on the part of government and private industries. The entity that looks after waterways, the Department of Primary Industries, Water and Environment , has not commented on Tasmania’s water pollution levels. Via The Guardian Image via Wikipedia Commons  

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Mining in Tasmania raises water pollution concerns to a new high

Water purification breakthrough can even clean water from the Dead Sea

April 3, 2018 by  
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Despite all our advances, access to clean water is still a major problem – not just for developing nations, but here in the US, where water shortages during natural disasters can cost lives. Scientists have created a cost-effective technology that addresses this problem using hydrogels. Using ambient solar energy, these gel-polymer hybrid materials can produce clean water from any source – including salt water from the Dead Sea. A team led by Guihua Yu at the University of Texas Austin created a hydrogel that is both hydrophilic and semiconducting. “We have essentially rewritten the entire approach to conventional solar water evaporation,” Yu said. The system works by creating water vapor under sunlight and then pumping the vapor into a condenser to deliver the freshwater. It also filters out contaminants that are harmful when consumed. Related: New MIT water purification method eliminates even trace chemical waste and pesticides The hydrogel -based solar vapor generator can desalinate water much more affordably than current options using much less power. “Water desalination through distillation is a common method for mass production of freshwater. However, current distillation technologies, such as multi-stage flash and multi-effect distillation, require significant infrastructures and are quite energy-intensive,” said Fei Zhao, a researcher involved in the project. Tests produced 25 liters of water per square meter – plenty for disaster-stricken areas or household use. Via Phys.org Images via UT at Austin

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Water purification breakthrough can even clean water from the Dead Sea

69% of Republicans believe global warmings seriousness is generally exaggerated

April 3, 2018 by  
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Have people changed their minds about global warming after President Donald Trump, infamous for his climate change denial, has spent a year in office? Gallup conducted their annual survey regarding the environment in early March, finding  that Americans’ thoughts on the topic “have increasingly become politically polarized” — and  Trump might have contributed to the divide. In 2017, 66 percent of Republicans thought “the seriousness of global warming is generally exaggerated.” In 2018, that number is now up to 69 percent. In contrast, four percent of Democrats think global warming is exaggerated, down from 10 percent last year. This is just one of Gallup’s findings — they said Americans’ concerns on the topic aren’t that different from last year, but some partisan views have shifted. They conducted telephone interviews between March 1 and 8 “with a random sample of 1,041 adults” residing in Washington, D.C. and all 50 states. Related: Despite Trump’s rhetoric, US officials are still working to stop climate change Is Trump to blame for the divide? Gallup said he may have contributed “by reversing a number of government actions to address the issue.” The announcement to pull America out of the Paris Agreement is perhaps the most notorious example; others include “the removal of climate change from the list of top U.S. national security threats and the elimination of the terms ‘global warming’ and ‘climate change’ from U.S. government websites and lexicons,” according to Gallup. 66 percent of Americans would “say most scientists believe global warming is occurring;” 64 percent say human activities caused the dilemma. These numbers fell a little from those in 2017; Gallup pinned that phenomenon on increased political polarization during the last year. Not all the numbers have dipped — 45 percent of Americans in 2018 “think global warming will pose a serious threat in their lifetime,” up from 42 percent in 2017. Gallup said the bottom line is that Americans’ higher level of concern over global warming, shown since 2016, remains largely intact. + Gallup News Images via Depositphotos ( 1 , 2 )

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69% of Republicans believe global warmings seriousness is generally exaggerated

Students in Rotterdam are turning wasted fruit into a leather alternative

August 8, 2015 by  
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Food waste is a major problem across the world, and while food sharing and conservation programs are making a dent in the issue, some students in Rotterdam decided that they wanted to tackle this issue in a more creative way. Nearly 8,000 tons of fruit is tossed out in Rotterdam every day. So these students decided to take that fruit and turn it into “leather” that can be used to make bags, wallets, and maybe even someday, upholstery. READ MORE >

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Students in Rotterdam are turning wasted fruit into a leather alternative

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