Extracting “green” hydrogen from thin air may be a saving grace in attempts to produce clean energy. Normally, water splitting to produce oxygen and hydrogen requires large amounts of preferably pure water, a rare substance in much of the world. Science News headlines its article, “To overcome the water shortage problem in the case of widespread deployment of hydrogen production, a team of researchers from Australia, the United Kingdom and China has demonstrated a method of producing high purity hydrogen from the air by using hygroscopic electrolyte soaked in a porous medium as the moisture absorbent.” GreenCarCongress notes researchers at [The University of] Melbourne have demonstrated a way to extract hydrogen directly from air via the capture of freshwater using “a hygroscopic electrolyte and subsequent electrolysis powered by solar or wind.” Pulling water from the air to perform water splitting could be a daunting prospect, but researchers found they could squeeze sufficient amounts from air with as low as four …