Most Popular Books by Erin Twamley

How do we heat our homes, light our rooms, and power our cars? With energy! In 2014, the United States relied on fossil fuels for about 67 percent of its power. But as the fossil fuel supply dwindles and climate change becomes an increasingly urgent issue, individuals, businesses, and governments are expanding their sources of renewable energy, including solar, wind, biofuel, hydro, and geothermal. In Renewable Energy: Discover the Fuel of the Future, readers ages 9 to 12 learn about these renewable energy sources and discover how sunshine can be used to power light bulbs and how the earth''s natural heat can be used to warm our houses. Young readers weigh the pros and cons of different energy sources and make their own informed opinions about which resources are the best choices for different uses. Renewable energy industries provide a booming field for future scientists and engineers. This book shows kids these future jobs and gets them excited about contributing to a world run on clean energy. Hands-on projects, essential questions, links to online primary sources, and science-minded prompts to think more about energy, the environment, and the repercussions of our choices make this book a key addition to classrooms and libraries.

For more than 200 years, scientists have been observing, measuring, and analyzing information about our planet’s climate. Studies show that the earth is in constant transition and humans have an effect on what happens. In Climate Change: Discover How It Impacts Spaceship Earth, young readers examine real studies concerning planetary science, Arctic ice bubbles, and migratory patterns. Kids explore the history of human impact from the Industrial Revolution to our modern-day technology, as well as the innovations underway around the world to address global climate change. The idea of climate change can be scary, but every one of us has the ability to make a difference. Focused on a pro-active approach to environmental education, Climate Change engages readers through hands-on activities and helps kids deconstruct myths about our changing world. Kids are directed to digital supplemental material that makes complex concepts easier to understand through visual representation. Climate Change offers a myriad of ways to think of our Spaceship Earth as the singular resource it is. Climate Change meets Common Core State Standards for literacy in science and technology; Guided Reading Levels and Lexile measurements indicate grade level and text complexity.

In this book, meet thirty-four real-life energy superheroes powering our planet. They install solar panels, dig wells miles into the ground, connect zigzagging power lines that charge our favorite electronics, and drive us into the future with battery-powered cars.

How many cows live on Earth? There are nearly one and a half BILLION cows on our planet. And those cows have gas! A few gassy cows would not be a problem, but their burps and farts release methane. Too much of this gas causes problems for our planet. So, scientists, engineers, and farmers are working to make cows less gassy. From using lasers to feeding cows curry (What kind of curry do you think a cow likes -- red, green or yellow?), this book shares the science behind caring for our environment.

How many cows live on Earth? There are nearly one and a half BILLION cows on our planet. And those cows have gas! A few gassy cows would not be a problem, but their burps and farts release methane. Too much of this gas causes problems for our planet. So, scientists, engineers, and farmers are working to make cows less gassy. From using lasers to feeding cows curry (What kind of curry do you think a cow likes -- red, green or yellow?), this book shares the science behind caring for our environment.