Snowflake unlikely that any two snowflakes are alike due to the estimated 10 (10 quintillion) water molecules which make up a typical snowflake, which grow at different rates and in different patterns depending on the changing temperature and humidity within the atmosphere that the snowflake falls through on its way to the ground. Snowflakes that look identical, but may vary at the molecular level, have been grown under controlled conditions. Although snowflakes are never completely symmetrical, a non-aggregated snowflake often grows so as to exhibit an approximation of six-fold radial symmetry. The symmetry gets started due to the hexagonal crystalline structure
Snowflake children Snowflake children Snowflake children is a term used by organizations that promote the adoption of frozen embryos left over from in vitro fertilisation to describe children that result, where the children's parents were not the original cell donors. These embryos are transferred to infertile couples via "embryo adoption", although the legal process of taking ownership of an embryo differs from that of traditional adoption. According to a CBS News article dated July 28, 2005, the term "Snowflake" was coined by the first agency to provide the transfer service, Nightlight Christian Adoptions. 451 children have been born from this program. Members