By now you have heard that all of my students will be involved in at least two citizen science projects this year. “Snowflake” Bentley was a well known character from Vermont and one of the best citizen scientists ever. Even though he was not a formally trained scientist, he proved that perseverance, excellent data recording, and the ability to notice patterns could lead to important discoveries. Have you noticed the snowflake poster outside my office? What is the coldest temperature it can snow?