'knowledge has grown' is correct and usable in written English.
You can use it in a sentence to describe the growth of knowledge over a period of time. For example, "In the last century, knowledge has grown exponentially, leading to the development of many new technologies and medical advances."
Worse, the fear is that the knowledge has grown beyond our capacity as a society.
While the body of sector knowledge has grown and there has been an increase in research activity, higher education for the sector it still a cottage industry.
"I didn't really know much about the sport when I first came into it but my knowledge has grown so much in the past 18 months.
If this ambitious novel has a contemporary point, it may be that, in the age of the computer (which Diderot predicted), the tree of knowledge has grown so far above the human capacity to scale it that we now have to race along the information superhighway just to stand still.
This should illustrate for them that knowledge has grown recently and significantly through new discoveries and analyses.
A robust body of knowledge has grown around entrepreneurs' need for superior skills and personality characteristics; the ones that enables them to effectively compete and survive.
That wouldn't be an issue today, partly because her knowledge base has grown with time but also because there are many more sources of information that are easier to find and access because "somebody always knows somebody".
2. Farming in America & Abroad -- If you are active in discussions regarding sustainable food, you have repeatedly heard about the knowledge gap that has grown over the years between consumers and where their food comes from.
Since then, our knowledge about NMO has grown exponentially.
Although our knowledge and understanding has grown enormously over the last few decades, much of that early hope has not been fulfilled.
Knowledge about Her2/ERBB2 has grown substantially within the last years since the introduction of trastuzumab as a targeted therapy for gastric cancer and EAC as well (Ross and McKenna, 2001; Bookman, 2003; Gravalos and Jimeno, 2008; Aitken et al, 2010; Bang et al, 2010; Rüschoff et al, 2010).
