You've all heard it before: You need scholarly/peer-reviewed sources. Vetted, authoritative sources.
Here are some things to consider when looking at any resources:
1. Who wrote it and why? Is it a politician, a journalist, a researcher in a particular field? Are they trying to persuade you or inform you?
2. Where is it posted or published? For example, is it a government website, an educational institution, a personal blog?
3. Who is the audience? Was it intended for the general public, people in a particular field?
4. What do they use for proof? Where are they getting their supportive information? How recent is their supportive information?
5. When was it written? How timely is it?
