Happy Pi Day! To celebrate we have book recommendations to combine our favorite ways of celebrating pi day. First we’ve found 3 books which use pi or pies (or both) to think about big questions. Scroll down further to find 14 cookbooks focusing on pies. Be sure to check them out!

3 Books to Think with Pie

How to Make an Apple Pie From Scratch: In Search of the Recipe for Our Universe, From the Origins of Atoms to the Big Bang

Experimental physicist and acclaimed science presenter Harry Cliff takes you on an exhilarating search for the most basic building blocks of our universe, and the dramatically unfolding quest to unlock their cosmic origins

Carl Sagan once quipped, “If you wish to make an apple pie from scratch, you must first invent the universe.” But finding the ultimate recipe for apple pie means answering some big questions: What is matter really made of? How did it escape annihilation in the fearsome heat of the Big Bang? And will we ever be able to understand the very first moments of our universe?

In How to Make an Apple Pie from Scratch, Harry Cliff–a University of Cambridge particle physicist and researcher on the Large Hadron Collider–sets out in pursuit of answers. He ventures to the largest underground research facility in the world, deep beneath Italy’s Gran Sasso mountains, where scientists gaze into the heart of the Sun using the most elusive of particles, the ghostly neutrino. He visits CERN in Switzerland to explore the Antimatter Factory, where the stuff of science fiction is manufactured daily (and we’re close to knowing whether it falls up). And he reveals what the latest data from the Large Hadron Collider may be telling us about the fundamental nature of matter.

Along the way, Cliff illuminates the history of physics, chemistry, and astronomy that brought us to our present understanding–and misunderstandings–of the world, while offering readers a front-row seat to one of the most dramatic intellectual journeys human beings have ever embarked on.

A transfixing deep dive into origins of our world, How to Make an Apple Pie from Scratch examines not just the makeup of our universe, but the awe-inspiring, improbable fact that it exists at all.

How to Bake Pi an Edible Exploration of the Mathematics of Mathematics

What is math? How exactly does it work? And what do three siblings trying to share a cake have to do with it? In How to Bake Pi, math professor Eugenia Cheng provides an accessible introduction to the logic and beauty of mathematics, powered, unexpectedly, by insights from the kitchen: we learn, for example, how the béchamel in a lasagna can be a lot like the number 5, and why making a good custard proves that math is easy but life is hard. Of course, it’s not all cooking; we’ll also run the New York and Chicago marathons, pay visits to Cinderella and Lewis Carroll, and even get to the bottom of a tomato’s identity as a vegetable. This is not the math of our high school classes: mathematics, Cheng shows us, is less about numbers and formulas and more about how we know, believe, and understand anything, including whether our brother took too much cake.

At the heart of How to Bake Pi is Cheng’s work on category theory—a cutting-edge “mathematics of mathematics.” Cheng combines her theory work with her enthusiasm for cooking both to shed new light on the fundamentals of mathematics and to give readers a tour of a vast territory no popular book on math has explored before. Lively, funny, and clear, How to Bake Pi will dazzle the initiated while amusing and enlightening even the most hardened math-phobe.

Humble Pi: a Comedy of Math Errors

The book-length answer to anyone who ever put their hand up in math class and asked, “When am I ever going to use this in the real world?”

“Fun, informative, and relentlessly entertaining, Humble Pi is a charming and very readable guide to some of humanity’s all-time greatest miscalculations–that also gives you permission to feel a little better about some of your own mistakes.” –Ryan North, author of How to Invent Everything

Our whole world is built on math, from the code running a website to the equations enabling the design of skyscrapers and bridges. Most of the time this math works quietly behind the scenes . . . until it doesn’t. All sorts of seemingly innocuous mathematical mistakes can have significant consequences.

Math is easy to ignore until a misplaced decimal point upends the stock market, a unit conversion error causes a plane to crash, or someone divides by zero and stalls a battleship in the middle of the ocean.

Exploring and explaining a litany of glitches, near misses, and mathematical mishaps involving the internet, big data, elections, street signs, lotteries, the Roman Empire, and an Olympic team, Matt Parker uncovers the bizarre ways math trips us up, and what this reveals about its essential place in our world. Getting it wrong has never been more fun.