It's PLA Time at Rivian's 3-D-Printing Lab That Pursues a Need for Speed

Rivian invited us to its facilities in Plymouth, Michigan, to explore the fun stuff it 3-D prints and hear how much filament ...
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Extracting the theobromine from cocoa powder

Theobromine is an interesting molecule and is very similar to caffeine. It appears in a high concentration in cocoa (a small ...