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Graphic collage of a person standing in front of peptoids and peptides UC Berkeley chemists synthesized a flexible polymer membrane incorporating nanoparticles called “porous aromatic frameworks.” The membrane selectively absorbs nearly 100% of metals such as mercury, copper, or iron during desalination, more efficiently producing clean, safe water. The membrane can incorporate a single type of tuned nanoparticle if the metal is to be recovered – or several different types, each tuned to absorb a different metal or ionic compound if multiple contaminants need to be removed in one step. (Credit: Adam Uliana/UC Berkeley) Berkeley Lab's new endothelial function monitor can be used at home, much like a standard blood pressure monitor. (Credit: iStock/PIKSEL) The meteorite studied in this work, named Miles, weighed 265 kg when it was discovered on a farm in Queensland, Australia, in 1992. This photo shows a 20-centimeter slice of the Miles meteorite loaned by the Harvard Museum of Natural History collection. (Credit: Clara Maurel/MIT) A masked scientist handling a sample in the EcoPod Collage of a gloved arm holding out a vial