For almost 20 years, the Outlets at Anthem decorated with the largest Christmas tree in Arizona. This year is no exception. Their 70-foot tall white fir tree weighs four tons after it's decorated. 
How did that tradition start? And how does the mall know that its tree is the tallest in the state?
Podcast editor Katie O'Connell found out during this week's episode of Valley 101, a podcast from The Arizona Republic and azcentral.com where we answer the questions you ask about metro Phoenix.