Matter & Energy News -- ScienceDaily

• This breakthrough turns old tech into pure gold — No mercury, no cyanide, just light and salt
  At Flinders University, scientists have cracked a cleaner and greener way to extract gold—not just from ore, but also from our mounting piles of e-waste. By using a compound normally found in pool disinfectants and a novel polymer that can be reused, the method avoids toxic chemicals like mercury and cyanide. It even works on trace gold in scientific waste. Tested on everything from circuit boards to mixed-metal ores, the approach offers a promising solution to both the global gold rush and the growing e-waste crisis. The technique could be a game-changer for artisanal miners and recyclers, helping recover valuable metals while protecting people and the planet.
• Graphene just unlocked “impossible” quantum currents without magnets
  Researchers have achieved a major breakthrough by generating quantum spin currents in graphene—without relying on bulky magnetic fields. By pairing graphene with a magnetic material, they unlocked a powerful quantum effect that allows electrons to carry information through their spins alone. This discovery could spark a new era of faster, more energy-efficient spin-based technologies.