A mesmerizing overview of the world as it was when glaciers covered the earth and long-extinct creatures like the woolly mammoths and saber-toothed cats battled to survive.Go back 20,000 years ago to a time of much colder global temperatures when glaciers and extensive sheets of ice covered...
Travel back to the time when the mighty dinosaurs ruled the earth.The Age of Dinosaurs began about 250 million years ago. In the beginning they were quite small but over time they evolved into the varied and fascinating creatures that captivate our imaginations today. What we know about...
"Highly recommended for high school and ambitious middle school readers." —School Library Journal"A valuable addition to STEM-themed collections." —VOYAAn in-depth look into the extraordinary life of the world's most important entrepreneur, Elon MuskThis fascinating and easily accessible...
"We want kids to feel about math the way they feel about dessert after dinner." —Laura Overdeck, Time magazineOur mission: to make math a fun part of kids' everyday lives. When is the last time you gave your child a math problem just for fun? Yesterday? Last year? Maybe never? We all know...
Supreme Court Justice Ruth Bader Ginsburg never asked for fame-she has only tried to make the world a little better and a little freer. But nearly a half-century into her career, something funny happened to the octogenarian: she won the internet. Across America, people who weren't even...