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Throwable Robot Ball Unfolds Legs to Walk – IEEE Spectrum

IEEE SpectrumThrowable Robot Ball Unfolds Legs to WalkIEEE Spectrum… Scalable, and there's no reason to think that there'd be a very high manufacturing cost: there are twelve servos (three per leg), some electronics, and legs made of a combination of titanium and shape-memory alloy with polyurethane foam shock …and more »

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Forest Service cleaning orange sludge mine near Patagonia – Arizona Daily Star

Arizona Daily StarForest Service cleaning orange sludge mine near PatagoniaArizona Daily StarPolyurethane foam is being used to seal horizontal entrances to the mine. The foam will be covered with rock and soil to prevent sunlight from degrading it. Bats use two other openings to the mine, and the Forest Service closed those openings with …and more »

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