Hey Ray: Using Pi to measure hat size 02:12. There is Pi all around us, in ways you may not have seen before. If you remember from school, Pi is the ratio of a circle's circumference to its diameter.

Abraham Lincoln's Stovepipe Hat is Wrong Size, No Evidence It Actually Belonged to Him, 16-Month State Study Finds Published Dec 23, 2019 at 9:03 PM EST Updated Dec 23, 2019 at 10:41 PM EST By ...

Check out these 10 crochet Christmas beanies. They are perfect for a festive look and most can be done in a few hours. Find your favorite pattern and make it for yourself or give as a gift.