For nearly four centuries virtually every bottle of wine had a cork in it. But starting in the 1970s, a revolution began to topple the cork monopoly. In recent years, the rebellion has been gathering strength. Belatedly, the cork industry began fighting back, while trying to retain its predominant position. Each year 20 billion closures go onto wine bottles, and, increasingly, they are not corks.

The cause of the onslaught against cork is an obscure chemical compound known as TCA. In amounts as low as several parts per trillion, the compound can make a $400 bottle of wine smell like wet newspaper and taste equally bad. Such wine is said to be corked. While cork's enemies urge people to throw off the old and embrace new closures, millions of wine drinkers around the world are still in love with the romance of the cork and the ceremony of opening a bottle.