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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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

NASA has a plan to put robot bees on Mars

April 3, 2018 by  
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NASA has announced the funding of a new research effort that will explore the possibility of using robot bees to study the Martian surface. NASA has appropriately called the concept the Marsbee, and the team hopes to develop a model that is capable of navigating the thin atmosphere of Mars in swarms, gathering information with various sensors. “The objective of the proposed work is to increase the set of possible exploration and science missions on Mars by investigating the feasibility of flapping wing aerospace architectures in a Martian environment,” explains University of Alabama researcher Chang-kwon Kang in a statement . A research team at the University of Alabama will work in collaboration with an as-of-yet unannounced team in Japan to create what may be a more efficient means to explore Mars. While the Mars rover has proven to be a reliable exploration machine, it does suffer from slow speeds. A swarm of robotic bees would not have this problem as it scours the surface of the Red Planet. The body of the Marsbee would be similar to that of an actual bumblebee, while its larger wings will be about the size of a cicada. Researchers are currently exploring the most effective mode of flight, whether flapping through flapping, fixed-wing or rotor. The collaborating group of Japanese scientists has already created their own wing-flapping robot, the hummingbird micro-air vehicle (MAV). Related: Elon Musk says trips to Mars coming as soon as next year The Marsbees would be bound to a mobile “hive,” in the form of a traditional rover. The rover would serve as a home base at which the Marsbees would recharge and store data. The Marsbees would also be capable of sending information whilst in-flight through Wi-Fi technology. The Marsbee is still very early in development. NASA expects feasibility studies to last a decade before the project moves onto Phase II. The challenges that must be overcome before the Marsbee takes flight include designing a potentially autonomous navigation system, determining flight style, and inventing a means to keep dust out of the Marsbee. Via Phys.org Images via NASA

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NASA has a plan to put robot bees on Mars

Scientists Caution China Against Bulldozing Over 700 Mountains

June 5, 2014 by  
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China wants to bulldoze more than 700 mountains in order to make way for more buildings , but scientists are unsurprisingly concerned about the plan. Never before has mankind attempted mountaintop removal of this scale and experts are concerned that there will be unexpected consequences for the poorly-conceived plan. Read the rest of Scientists Caution China Against Bulldozing Over 700 Mountains Permalink | Add to del.icio.us | digg Post tags: bulldozing mountain , China air quality , china building , China bulldozing mountains , China construction , China destroying mountains , China environment , China environmental destruction , China flattening mountains , China mountains , China moving mountains , environmental destruction , environmental impact , nature journal , scientific study environment , scientists warn China

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New Study Reveals That Earthworms Accelerate Global Warming

February 6, 2013 by  
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Photo via Shutterstock In 2011, we published a story that non-native earthworms were a threat to the US as they were releasing more carbon into the atmosphere. Now a new Dutch/US study has revealed that it’s not just non-native earthworms that accelerate carbon release, but ALL earthworms. However, the report, which was published in the Nature journal , states that it is not so much the earthworms’ fault, but the soil in which they live. Read the rest of New Study Reveals That Earthworms Accelerate Global Warming Permalink | Add to del.icio.us | digg Post tags: carbon dioxide , Climate Change , earthworms , greenhouse gas emissions , greenhouse gases , nature journal , nitrous oxide , soil , US study

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New Study Reveals That Earthworms Accelerate Global Warming

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