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Wednesday, January 13, 2021

Book Review: A Walk Around the Block: Stoplight Secrets, Mischievous Squirrels, Manhole Mysteries & Other Stuff You See Every Day (And Know Nothing About) by Spike Carlsen (audio)

I like to walk. And I love random facts. This book was made for me.

Spike goes for a walk around the block and along the way, he wonders about the composition and cost of sidewalks, where the water goes down the drainage grates, and why there's a metal number on telephone poles and what it means. You'll find out the answers to all of these and much more in this book! Where does the water coming into your house come from? When and how were road surfaces invented and developed? 

Some facts: squirrels chew on your house not to be assholes, but because if they don't wear down their teeth, they will grow too long for squirrels to be able to eat. Their teeth continue growing throughout their life.

Also: there is water in your concrete. It binds with the cement in the mixture and while it "dries" (it's not drying), it's forming crystals through chemical reactions. So even "dry" concrete still has about 10% water. And yes, you can add way too much water and no, it won't just take longer to "dry"--it will be terrible concrete that is weak and not functional.

You'll learn about the different types of electrical poles. I was fascinated that the highest wires, which are the ones with the most high power, aren't insulted. That would cause the wires to be enormous, heavy, and expensive--in ways that just won't work. So they're super duper dangerous if they were to come down. Which is why they're so high. Also the reason birds can sit on wires and not be electrocuted is because A) they're so little that they're not very useful to electricity as a conductor and B) they'd need to be touching something other than the wire for the electricity to go through them. Electricity just go into things that touch it--it travels through things to get somewhere. While Mr. Carlsen doesn't state it specifically, the implication is that humans also could sit on a wire and be safe--if they don't touch anything else. 

What do you wonder about when you go on a walk? Would you like a fun walk companion who will tell you all sorts of trivia? Invite Mr. Carlsen along. He's an excellent walking companion.

I downloaded this digital audiobook from Libby/Overdrive.

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