CAFFEINE is one of the world’s hottest medicine, and occasional one among its best-loved supply mechanisms. It’s grown in additional than 70 international locations; greater than 2bn cups are drunk every day. It helps help the livelihoods of an estimated 125m individuals. It not directly helps many extra, together with your Californian correspondent (although not his tea-drinking British editor), by supplying them with a jump-start each morning.
