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

Footprints from world’s largest dinosaur discovered in Scotland

April 3, 2018 by  
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Dozens of footprints from ancient sauropods , a kind of creature that scientists believe may have been the largest dinosaur ever, have been discovered in Scotland. These 170-million-year-old footprints are also the oldest ever discovered in Scotland. The sauropod footprints were located in a lagoon on the Isle of Skye, near a group of footprints from theropods, more ancient cousins of  Tyrannosaurus Rex.  “It shows both long-necked and meat-eaters were on the same site at the same time living together, side-by-side,” Dr. Steve Brusatte of Edinburgh University told the Telegraph . “It captures a moment in time 170 million years ago when they were just hanging out in a lagoon, living on the beach, back when Scotland was much warmer and dinosaurs were beginning their march to global dominance.” Scientists believe that the sauropods who left the footprints were least 49 feet long and weighed more than 10 tons. The theropods are thought to have stood at least six feet tall. In total, researchers documented approximately 50 footprints near Brothers’ Point on the Isle of Skye’s Trotternish peninsula. This wet and wild location made it difficult for scientists to study the footprints on-site, though  drones helped, particularly in creating a map of the dig site. Related: Turns out blood-sucking ticks really did plague the dinosaurs Despite its challenging environment, Scotland ‘s Isle of Skye has proven to be a bountiful trove of dinosaur fossils. “This tracksite is the second discovery of sauropod footprints on Skye,” study lead author Paige dePolo told Science Daily . “It was found in rocks that were slightly older than those previously found at Duntulm on the island and demonstrates the presence of sauropods in this part of the world through a longer timescale than previously known. This site is a useful building block for us to continue fleshing out a picture of what dinosaurs were like on Skye in the Middle Jurassic.” Via The Telegraph and Science Daily Images via  Paige dePolo/University of Edinburgh and University of Edinburgh

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Footprints from world’s largest dinosaur discovered in Scotland

UW students develop low-cost solar-powered water purification system

December 28, 2010 by  
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Eco Factor: Low-cost water disinfection system powered by solar energy. The idea of using solar energy for purifying water has been around for ages and is still practiced in different parts of the globe. However, now a team of students from the University of Washington have come up with a bright idea taking a little bit of technical help to devise a low-cost solution to a global problem

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UW students develop low-cost solar-powered water purification system

E-bike Summer Life customizable electric bicycle for those who care for the greens

December 28, 2010 by  
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Eco Factor: Zero-emission electric bicycle concept. Eco-conscious designer Juliano Bortolin aims to make zero emission bicycle transport more attractive for people who respect the environment and its resources with a new concept electric bike dubbed the E-Bike Summer Life. Designed for people who love surfing, nature and outdoor life, the E-bike features six lithium batteries that help propel the bike.

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E-bike Summer Life customizable electric bicycle for those who care for the greens

Hydra Is a Relief Vehicle, Water Purifier and Power Plant All in One

October 22, 2010 by  
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A company called  The Essential Element has designed a vehicle that not only provides renewable power in the aftermath of a natural disaster, but also purifies water, a resource that is often in great demand after an earthquake or similar incident.

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Hydra Is a Relief Vehicle, Water Purifier and Power Plant All in One

Portable Solar Power Plant, Water Purifier and Fuel Cell in One

October 21, 2010 by  
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In many areas of the world, and also during times of natural disasters, clean drinking water and access to power are scarce.  The company The Essential Element has designed the Hydra water purifier and fuel cell to take care of both of those problems at once. The Hydra is equipped with a 2.88 kW solar panel array that runs a pump that pushes water through a self-cleaning filtration device (capable of purifying 87,000 liters a day), juices up lead-acid gel batteries and runs an electrolyzer that splits some of that water to fill a .37 cubic-meter tank with pressurized hydrogen

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Portable Solar Power Plant, Water Purifier and Fuel Cell in One

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