SKU: 480396770

Thing Explainer

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Description

Thing ExplainerBy: Randall Munroe From the No. 1 bestselling author of What If? the man who created xkcd and explained the laws of science with cartoons comes a series of brilliantly simple diagrams ('blueprints' if you want to be complicated about it) that show how important things work: from the nuclear bomb to the biro. It's good to know what the parts of a thing are called, but it's much more interesting to know what they do. Richard Feynman once said that if

By: Randall Munroe     

From the No. 1 bestselling author of What If? - the man who created xkcd and explained the laws of science with cartoons - comes a series of brilliantly simple diagrams ('blueprints' if you want to be complicated about it) that show how important things work: from the nuclear bomb to the biro.

It's good to know what the parts of a thing are called, but it's much more interesting to know what they do. Richard Feynman once said that if you can't explain something to a first-year student, you don't really get it. In Thing Explainer, Randall Munroe takes a quantum leap past this: he explains things using only drawings and a vocabulary of just our 1,000 (or the ten hundred) most common words.

Many of the things we use every day - like our food-heating radio boxes ('microwaves'), our very tall roads ('bridges'), and our computer rooms ('datacentres') - are strange to us. So are the other worlds around our sun (the solar system), the big flat rocks we live on (tectonic plates), and even the stuff inside us (cells). Where do these things come from? How do they work? What do they look like if you open them up? And what would happen if we heated them up, cooled them down, pointed them in a different direction, or pressed this button?

In Thing Explainer, Munroe gives us the answers to these questions and many, many more. Funny, interesting, and always understandable, this book is for anyone -- age 5 to 105 -- who has ever wondered how things work, and why.

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SKU: 480396770

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MKolts
Massapequa, US
★★★★★ 4
Good product.
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
This is a little different texture from regular toothpaste and it doesn't lather in your mouth. However, it seems to clean really well, and taste is fine.
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Reviewed in the United States on May 29, 2026
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W. Gover
Phoenix, US
★★★★★ 5
Gentle, Effective Toothpaste That Leaves My Mouth Feeling Clean
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
I bought Davids Fluoride-Free Xylitol Toothpaste because I wanted a natural alternative that still supported whitening and enamel health, and it has become my go-to daily toothpaste. I use it morning and night, and the peppermint flavor is refreshing without being overpowering, leaving my mouth feeling clean and energized. I noticed my teeth look brighter after a couple of weeks, and my gums feel healthier and less sensitive compared to when I used regular fluoride toothpaste. I love that it’s free of sulfates and harsh chemicals, and the texture is smooth and easy to apply to my toothbrush. The sleek, eco-friendly packaging is a bonus, and it feels good to use a product that aligns with both my oral care needs and my values.
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Reviewed in the United States on March 18, 2026
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CT
Lake Worth, US
★★★★★ 5
So good!
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
Makes my teeth feel SO CLEAN! Love it!
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Reviewed in the United States on May 22, 2026
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swullkull
Fort Morgan, US
★★★★★ 5
Clean Ingredients Without Compromising Performance
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
My wife purchased Davids Fluoride Free Toothpaste because she wanted a cleaner alternative without all the unnecessary additives found in many mainstream brands—and it’s exceeded expectations. First, the ingredient list is refreshingly simple. No fluoride, no SLS, and none of the artificial extras you often see in traditional toothpaste. It feels good knowing we’re using something more thoughtfully formulated. What really stands out is that it actually works. It leaves your mouth feeling genuinely clean and fresh, not just artificially minty. The texture is smooth, it foams lightly (without being overwhelming), and it rinses clean without any residue. Over time, her teeth look brighter, and it does a great job keeping plaque under control. The mint flavor is crisp and natural—not overly sweet or harsh. It strikes a nice balance between refreshing and subtle. It's safe, sturdy and does not bother my wife's sensitive teeth. The size is perfect to keep at home. If you’re looking for a fluoride-free, SLS-free toothpaste that still delivers whitening and antiplaque benefits, Davids is an excellent option. It’s a clean upgrade that doesn’t sacrifice performance.
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Reviewed in the United States on February 24, 2026
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mtsfly
Charlottesville, US
★★★★★ 3
Pros and cons listed below, you decide
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
II like the flavor (peppermint) and that is is a healthier option for tooth paste - BUT - the cap and tube needs redesigning. The cap is hard to screw on most of the time flying onto the counter or the floor and also easy to confuse which end to screw on if you're not paying attention as one end is to puncture the end of the tube to get the paste out and the other to cover the tube after use. The tube is too hard to get all the product out and to roll because I believe it is made of metal instead of plastic which is good but not so good. This is already very expensive and you cannot get all the toothpaste out. The cons are why I gave the 3 stars otherwise this is a 5 star for me and my husband.
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Reviewed in the United States on May 27, 2026

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