At Davos, Switzerland,
in late October, a
skier navigates a cross-
country trail made
of artificial snow pro-
duced the previous
winter. It was stored
over the summer in a
20-foot mound under
a 16-inch layer of
sawdust, then spread
on the trail for the
new season.WINTER
IN THE ALPS, THE ECONOMY AND CULTURE
REVOLVE AROUND SNOWY WINTERS.
NOW THERE’S A SCRAMBLE
TO PRESERVE SNOW AND ICE
THREATENED BY WARMING.