Wolfram Alpha as as a cross between a research library, a graphing calculator, and a search engine. For those math majors, as well as other people who love numbers and statistical data, will find Wolfram Alpha very relevant.  Almost anything can be computed through the search engine, and it also delivers statistical data, depending on the input.

There is a big difference between Google and Wolfram Alpha, Google is really good at finding information that has already been put down somewhere, or answering questions that have already been asked and answered. That covers a lot of ground and a lot of research. Wolfram Alpha, though, can answer questions that have never been asked before, provided the data to create the answer exists in its corpus of facts and figures.