By Donna Lu An artist’s impression of the water-purifying panelH.M. Cao at University of Rochester A black panel of aluminium crafted by lasers can purify water when heated by ordinary sunlight. It could eventually be used in drought-stricken areas or regions where clean drinking water is not readily available. Chunlei Guo at the University of…
10 min read The following story contains spoilers for Lanterns through episode 6. AT THE CLIMAX of 2025’s Superman, a little boy begs the Man of Steel to come and save his countrymen from the forces of an invading military. The boy gets saved, but not by the Last Son of Krypton. Instead, an emerald
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