How We Know What We Know

How We Know What We Know


Age: 9+

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Author: Shruthi Rao
Publisher: Penguin Random House India

Why did pirates covet maps more than gold?
Does Mars sometimes slip into reverse gear?
Can trees reveal secrets of the past?

There are millions of facts that we know about the world-that the earth is round, that birds migrate and that dinosaurs once roamed the planet.
But how do we know what we know?
Regaling us with tales of remarkable men and women who didn’t rest until they got the answers they sought, Shruthi Rao chronicles the stories behind the discoveries and inventions we take for granted today. This book, in fifty marvelous accounts, tells us of the sense of mystery and wonder that propel scientists to find solutions to the puzzling problems of the world around us.

Format: Paperback
Number of Pages: 208
Language: English

I think every child should read this book. What a way to get them interested in STEM and the world around us! My daughter and I loved all the chapters -- the chapter on fabrics, the history of paper, and how refrigerators were invented. Shruthi talks about how Albert Einstein even attempted to design an environmentally friendly fridge but gave up. This design is being revisited, by the way! The chapter on the history of crayons was great to read too, and we liked how it talked about the controversy of Crayola's 'skin' colored tone, which was light in color. We read the chapters on electromagnetism, zero and the decimal system. We came back from the book with our minds full of ideas! 

Shweta Sharan says

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