It's incredible to think back on what constituted as a hoverboard only a few years ago (weird two-wheeled electric skateboards) and to see where they are now. Franky Zapata takes his latest invention for a wild ride and shows what it's capable of. Zapata takes what's essentially a board with ...

If you've ever found yourself wondering how massive forces like jet engines and rockets are measured, it's all thanks to a massive amount of weight - one million pounds to be exact. Located at NIST in Washington DC, they have calibrated 20 interlocking weight plates that each weigh approximately ...