Snowflake in the same micro-environment does not guarantee that each arm grow the same; indeed, for some crystal forms it does not because the underlying crystal growth mechanism also affects how fast each surface region of a crystal grows. Empirical studies suggest less than 0.1% of snowflakes exhibit the ideal six-fold symmetric shape. Very occasionally twelve branched snowflakes are observed; they maintain the six-fold symmetry. Snowflakes form in a wide variety of intricate shapes, leading to the notion that "no two are alike". Although nearly-identical snowflakes have been made in laboratory, they are very unlikely to be found in nature. Initial
How Do They Do That? How Do They Do That? How Do They Do That? is a British television show, produced by Telepictures and Reg Grundy Productions in and broadcast on BBC1 from 25 January 1994 to 23 April 1997. Originally presented by Jenny Hull and Des Lynam, the show explored feats of engineering, organization, and special effects. Each season opened with a stunt apparently performed by one of the presenters, such as a skydiver crash-landing into the studio, a car chase, or the entire studio being washed away. After two series, Eamonn Holmes took over as male presenter, and from Series 5, was joined