by Francois Becker and Antoine Bouthier Agence France-Presse MONTCLAR, France (AFP) – Last Christmas, for the first time in its existence, a ski resort in the French Alpine town of Montclar could count neither on Mother Nature nor its artificial snow machines to produce enough of the white stuff to cover its pistes. Instead, it had to use a helicopter, at great cost, to bring snow from the high peaks of the Alps to lower, warmer […]