Decades after the industrialized world largely eliminated lead poisoning in children, the potent neurotoxin still lurks in one in three children globally. A new study in Bangladesh by researchers at Stanford University and other institutions finds that a relatively affordable remediation process can almost entirely remove lead left behind by unregulated battery recycling – an industry responsible for much of the lead soil contamination in poor and middle-income countries – and raises troubling questions about how to effectively eliminate the poison from children’s bodies.
Workers dig up contaminated soil and waste at the site of a former lead battery recycling operation in Kathgora, Bangladesh. (Image credit: Pure Earth)
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Plumes on Icy Worlds Hold Clues About What Lies Beneath A new model shows how brine on Jupiter’s moon Europa can migrate within the icy shell to form pockets of salty water that erupt to the surface when freezing. The findings are important for the upcoming Europa Clipper mission and may explain cryovolcanic eruptions across icy bodies in the solar system. Stanford University and University Communications Dec. 16, 2020 This artist’s conception of Jupiter’s icy moon Europa shows a hypothesized cryovolcanic eruption, in which briny water from within the icy shell blasts into space. A new model of this process on Europa may also explain plumes on other icy bodies.
A new model could explain hypothesized icy eruptions coming from Jupiter’s moon Europa.
On Europa, powerful eruptions may spew into space, raising questions among hopeful astrobiologists on Earth: What would blast out from miles-high plumes? Could they contain signs of extraterrestrial life? And where in Europa would they originate?
The new explanation now points to a source closer to the frozen surface than might be expected.
Rather than originating from deep within Europa’s oceans, some eruptions may originate from water pockets embedded in the icy shell itself, according to new evidence.
Using images collected by the NASA spacecraft Galileo, the researchers developed a model to explain how a combination of freezing and pressurization could lead to a cryovolcanic eruption, or a burst of water.
Researchers are now studying earthquakes and geology with unused optic fiber cables
So-called dark fiber could help seismologists map the underground and measure our planet s rumbles.
Studies are increasingly starting to show that the same optical fibers that deliver our high-speed internet and video can be used to study earthquakes and geology
As a geophysics undergrad, it was thrilling to learn how earthquakes can be used to study the subsurface. Earthquakes are pretty much the only reason we know anything about the Earth’s internal structure, and they can tell us a lot about the make-up of the crust, mantle, and even the core of our planet. It gets even better: you can “fake” an earthquake with special tools (which can range from a big hammer to dynamite) to assess the geologic structure of the area beneath you. If you have the proper tools to