What is Data Science?

Recently, the term Big Data has become ubiquitous. People who can wrangle Big Data are called Data Scientists. According to a number of sources, there is a growing need for people trained as Data Scientists. But what is Data Science? Is Data Science its own field or is it an interdisciplinary mix of Computer Science, Mathematics and Statistics, and Domain Knowledge or perhaps it is really what Statisticians have been doing all along? Since data science at scale involves large-scale computation, what is the relation between data science and computational science in research and education? At a panel at the SIAM Computational Science & Engineering conference in Salt Lake City in March 2015, leaders in Data Science and Computational Science discussed the current and future status of Data Science, its relationship to Computational Science, opportunities for Data and Computational Scientists and educating future Data Scientists.