Instead of using refrigerated trucks to deliver medical supplies to people…

Instead of using refrigerated trucks to deliver medical supplies to people who live in the deserts of Africa, inventors have built solar-powered refrigerators that can be carried by camels, and so the medicines are delivered via refrigerated camel. Apparently it wasn’t that easy to build a camel-carried refrigerator. It had to be lightweight, but also […]

Some knife makers attach a coin to each knife they sell…

Some knife makers attach a coin to each knife they sell, to circumvent the superstition that giving someone a knife as a gift severs the relationship: the receiver can ‘pay’ for the knife by returning the coin to the person who gave the knife to them, turning the gift into a ‘purchase’. 00