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Science

Energy

World's first "aqueous solar flow battery" outperforms traditional lithium-iodine batteries

The scientists that revealed the "world's first solar battery" last year are now, following some modifications, reporting its first significant performance milestone. The device essentially fits a battery and solar cell into the one package, and has now been tested against traditional lithium-iodine batteries, over which the researchers are claiming energy savings of 20 percent.Read More

Biology

Imaging tool lets scientists look inside brain at nanoscale resolution

The human brain contains more synapses than there are galaxies in the observable universe (to put a number on it, there are perhaps 100 trillion synapses versus 100 billion galaxies), and now scientists can see them all – individually. A new imaging tool promises to open the door to all sorts of new insights about the brain and how it works. The tool can generate images at a nanoscale resolution, which is small enough to see all cellular objects and many of their sub-cellular components (so for the biology-literate, that's stuff like neurons and the synapses that permit them to fire, plus axons, dendrites, glia, mitochondria, blood vessel cells, and so on).Read More

Space

Brown dwarf aurora may help characterize distant exoplanets

The discovery of a powerful aurora surrounding a distant failed star may in future aid astronomers in their hunt for habitable planets. The aurora is the first to be discovered around a brown dwarf, known as LSRJ 1835+3259 (LSRJ). It's a type of star that shares many characteristics with known exoplanets, and the technique used to observe the phenomenon could one day be a factor in determining whether a planet could sustain life.Read More

Environment

Smog Free Tower creates clean air, and air that you wear

Smog affects many major cities around the world and can cause health problems for those breathing it in. To highlight this issue, Dutch artist Daan Roosegaarde is building what he calls the world's largest air purifier. The Smog Free Tower is designed to allow people to breathe clean air in a city ... plus it also turns the smog into jewelry.Read More

Science

Earth's magnetic field may be more than 750 million years older than previously thought

The Earth's magnetic field is crucial to life on the planet. It keeps out harmful solar winds, which would strip away our atmosphere and surface water and bombard us with radiation if left unchecked. A new analysis of zircon minerals suggests that the field originated at least 4.2 billion years ago – a hop after the planet formed in the geological timeline, and much earlier than previously thought.Read More

Medical

Non-invasive spinal cord stimulation gets paralyzed legs moving voluntarily again

Five men with complete motor paralysis have regained the ability to move their legs voluntarily and produce step-like movements after being treated with a non-invasive form of spinal cord stimulation. The new treatment builds on prior work to generate voluntary movements in paralyzed people through electrical stimulation – in particular, two studies (one completed in 2011, the other in 2014) that involved surgically implanting an electrode array on the spinal cord. This time, however, the researchers found success without performing any invasive surgery.Read More

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