Begin by reflecting on what you already know about global temperature trends. What trends do you expect to see as you plot how temperatures have changed over time? What are your sources of prior knowledge, and would you consider them reliable?

The correct answer to this open question is the following.

According to what I already know about global temperature trends, the trends that I expect to see as I plot how temperatures have changed over time is that it is going to increase probably a little more in the coming years before it starts a period of cooling on the surface of planet earth.

Ye, although it could sound strange at this moment, some Eastern European scientists have announced the coming of a "mini-ice age" in the next 40 or 50 years.

My source of prior knowledge that I consider reliable is the Russian Academy of Sciences. More specifically, the Pulkovo Observatory belongs to the Research Laboratory in St. Petersburg, Russia.

I am referring specifically to the research results published by Dr. Habibullo Abdussamatov, who is the Head of the Space Laboratory for the Russian Agency.

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