362: Time and Cheese Grater
Dear Hank & John
Do You Need Bifocals?
Hank and John answer your science questions. Angela asks, I recently purchased a heating pad at CVS that does not work in an oxygen atmosphere. Does this mean that the product is not safe for use on earth? Oh, no, we don't have an oxygen atmosphere; mostly most of air is nitrogen. Bring my heating pad to Mars, but not until after 2026, Angela.
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