Corking climate change: sustainable practices bear fruit in champagne production

For some vineyards in France, employing green practices in their winemaking is as important as protecting the use of the term 'champagne'

As revelers around the world ring in the new year with glasses of champagne tonight, they're probably not toasting to the sustainable agricultural methods that went into some of the bottles.

But for some vineyards in France - where earlier this month nearly 200 nations signed a landmark deal to limit climate change - employing green practices in their winemaking is as important as protecting the use of the term "champagne", which applies only to the bubbly produced in a region of France that bears the same name.