Ever wondered why there’s a plastic ball in your can of Guinness? It’s not just a quirky feature—it’s brilliant beer science. In this video, see how this tiny device, called a widget, recreates the ...

Mine Kafon is a ball made from bamboo, iron, and plastic that has been designed as an attempt to clear minefields. It was made by Afghan inventor Massoud Hassani who came up the with the idea ...