The formation of frost flowers can only happen when freezing weather conditions occur while the ground itself is not frozen. The sap from plants will expand, causing long, thin cracks to form along the length of the stem. Water is then drawn through these cracks and freezes upon contact with the air. As more water is drawn through the cracks it pushes the thin ice layers further from the stem, causing a thin “petal” to form.
- Planned Parenthood officials said they believed Friday's shooting at a Colorado Springs clinic was motivated by opposition to abortion. ›
- World leaders will meet in Paris starting Monday to discuss a potential global climate change agreement. ›
- "Victor Frankenstein" joined the ranks of 2015 films that opened in more than 2,000 North American theaters, but earned less than $4 million on opening weekend. ›