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Matter & Energy

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Green catalysts illustration

NEED FOR SPEED  Platinum and other rare metals are commonly used as catalysts, but scientists pursuing greener technologies are searching for more sustainable ways to get reactions going.

fluorescing dna

LIGHTING UP  When stimulated with light, DNA “blinks” on, making cellular structures (chromosome shown) visible without the need for fluorescent dyes.

helium sodium compound

HELIUM COMPOUND  Scientists created a chemical compound of helium and sodium by squeezing the elements to extremely high pressures. Helium atoms (green cubes) are arranged in a 3-D checkerboard structure, each surrounded by eight sodium atoms (purple). Electron pairs (red) sit in the spaces between helium atoms.

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