Soft copper wire 22 gauge (wire diameter 0.6mm): 2 pieces of 6cm (2.5 inch) for each link 1.5cm (0.6 inch) for basic link You ...

DIY #guide #LanAnhHandmade #jewelry Flowers always have their own charm, do you want to make your own beautiful flowers? Very ...

NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.