How has the role of light therapy evolved as a treatment for cancer and other diseases over the past 50 years?
What is your research question? (How has light become an instrument to treat cancer and other diseases)
Examples of how you should phrase your research question: (Your question must be phrased in this style.)
How has the role of [topic] changed over the past 50 years?
What are the effects of [topic] on [topic]?
How did the [topic] impact the lives of [topic] in the [topic]?
How has [topic] changed over the past century, and what has influenced those changes?
Bad: How does social media affect people's behavior? (This is not specific enough.)
Good: What effect does the daily use of YouTube have on the attention span of children aged under 16?
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