"We use a lot of energy to power our lives - from our homes and cars to our tablets and handheld games. The challenge facing us today is finding sustainable energy methods that will ensure a green future. There are seven different types of green energy - and they are the only types that don't pollute our Earth. We have learned how to harness the power of the sun, wind, water, and Earth. And technological innovations have allowed us to put these alternative...

"This STEM-based set of True Books introduces students to the engineering innovations that can help us reach more environmentally friendly goals"-- Provided by publisher. "Envision a brighter future with this STEM-based subset of True Books.Small changes over the years - from smarter light bulbs to energy-efficient appliances - have made our homes more environmentally friendly. In recent years we have learned how to make alternative energies and...