Anatomy
Best Anatomy Books for Beginners: 28 Picks From an MD-PhD
November 10, 2026
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Anatomy
Best Anatomy Books for Beginners: 28 Picks From an MD-PhD
November 10, 2026
Chemistry
Best Chemistry Books for Self-Study: 26 Picks, Beginner to Organic
November 10, 2026
Mathematics
Best Math Books for Self Study: 28 Picks, Arithmetic to Analysis
November 10, 2026
Physics
Best Physics Books for Self-Study: 21 Picks From Beginner to Upper Level
November 10, 2026
Before you buy
Books and gear for science readers, students and classrooms, with the specs and editions checked for every pick.
Best Biology Books for Self-Study
Biology books that teach without a teacher: self-teaching guides, coloring workbooks, Campbell, cell biology, biochemistry, genetics and anatomy, plus what Reddit recommends.
Best Anatomy Books for Beginners
Anatomy books that make you practice: coloring books, beginner A&P books, which Gray's to buy, atlases and picks for nursing, massage and art.
Best Chemistry Books for Self-Study
Chemistry books that teach without a teacher: self-teaching guides, problem books, general and organic textbooks and what Reddit recommends.
Free to print
Periodic tables, conversion charts and worksheets as free PDFs in US Letter and A4, with answer keys for the quizzes.
Weight Conversion Chart
Kilograms to pounds and pounds to kilograms for every body weight, plus ounces, grams and a units table.
Height Conversion Chart
Feet and inches to cm and cm to feet and inches, from 4 to 7 feet, with meters on every row.
Printable Periodic Table
Free periodic table PDFs in color, black and white, blank with a key, kids and an element list, plus a build-your-own customizer.
Fresh from the lab
Geology
Best Geology Books for Beginners: 15 Picks From a Geoscientist
A geoscientist's picks for learning geology from scratch: popular science books, plain-language introductions, intro textbooks, rock and mineral…
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Science
Christmas Gifts for Scientists: 24 Science Gifts They Will Use
A former CERN physicist's Christmas gift guide for scientists and science lovers: 24 picks sorted by field, practical…
November 10, 2026
Science
Best Science Books for Non-Scientists: 23 Picks for Beginners
A physicist's list of the best science books for non-scientists: the best first book, short reads, books on…
November 10, 2026
Geology
Roadside Geology Books: Every State, Newest Editions and Best Picks
A geoscientist's guide to the Roadside Geology series: the full state-by-state list with current editions, the best titles…
November 10, 2026
Zoology
16 Examples of Scorpions, From Harmless to Deadly
Scorpions come in more than 2,500 described species, and the sting of most of them is no worse…
November 9, 2026
Technology
What Is a Sensor? Types, How They Work, and Examples
A sensor is a device that detects a physical quantity, such as temperature, light, pressure, or motion, and…
November 9, 2026
Technology
20 Facts About Biomedical Engineering Worth Knowing
Biomedical engineers build the machines, implants and software that keep people alive, and a surprising number of them…
November 9, 2026
Physics
Examples of X-rays: 10 Types and What Each One Shows
TLDR Table of contents An X-ray is a shadow picture. A machine sends a brief burst of high-energy…
November 9, 2026
Geology
Volcanoes in Virginia: Two Extinct Sites and Where They Are
TL;DR Table of Contents Does Virginia have volcanoes? Yes and no. Nothing in Virginia is active, smoking, or…
November 9, 2026
Why we publish
33Science is an independent publication exploring the natural world — from the chemistry of a single crystal to the life cycle of a star. Clear, curious and rigorously sourced, for readers of every background.
