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DIY PVC pump to save money on repairs

The science pros at TKOR create a DIY PVC pump to help save money on repairs. Trump dials Collins with 'profanity-laced rant' ...
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DIY Balloon Pump Could Facilitate Point-of-Care Testing

A simple pressure pump, made from balloons and nylon stockings, means more people in more places will be able to test water contaminants and blood samples. The ingenious device unveiled in the ...