Here's a question to ponder during these cold, wintry days: How big can snowflakes get? Part of the answer depends on what you mean by the word "snowflake." The other part of that answer depends on ...

Kenneth Libbrecht creates designer snowflakes by manipulating temperature and humidity in an ice crystal growth chamber that he built. (Photo by Kenneth Libbrecht) The Jan. 16 Style article "The man ...

Part of the answer depends on what you mean by the word "snowflake." The other part of that answer depends on who you ask. If you consult the Guinness World Record keepers, they say that the "largest ...