Remains of 50,000-year-old baby mammoth found in Siberia ...

This is the case with [Penguin DIY]’s tiny centrifugal water pump built from 5 ml syringes. The pump is powered by a small 8 mm diameter brushed DC motor, likely the same type that is used for ...

David Whitman of South Pasadena works out of his patio to make water pumps that he likes to call “little fire engines.” He describes them as self-contained sprinkler systems that pump water ...