Data Science helps bring all the disciplines together around the "data" which describe a phenomena of interest (e.g., healthcare, travel, construction) and provide mechanisms to explore and uncover deeper meaning and understanding to drive human fact based knowledge.
Folks ask questions like, do I need to know statistics to be part of a data science team, what is descriptive, versus predictive and prescriptive analytics?
As a science, data science can be broken down to a series of steps (9) that help drive you from what is your question to what are potential answers. Understanding this process is key to reproducible research.