WASHINGTON - A cherished common belief -- that no two
snowflakes are alike -- may be in doubt.
Nancy C. Knight, of the National Center for Atmospheric
Research in Boulder, Colo., has made the first discovery of a
matching set of snow crystals.
"My first reaction was to say, "That's absolutely
impossible,' " said her husband, Charles Knight, also a researcher
at the center.
But there the two crystals were, side by side, on a glass
slideexposed in a cloud on a research flight over Wausau, Wis.
"One of the most quoted statements about snow crystals is
that no two are alike, a bit of folk wisdom that is generally
accepted even among those few …
