First identical snow crystals

First identical snow crystals
Who
Unknown
What
First
Where
United States (Boulder,Colorado)
When
1988
A common-used statement about snow is that two snowflakes are never alike. However, in 1988 Nancy Knight (USA), a scientist at the National Center for Atmosphere Research in Boulder, Colorado, USA, found two identical examples while studying snow crystals from a storm in Wisconsin, using a microscope.