Envision a brighter future with this STEM-based subset of True Books.Thanks to the development of agriculture, our Earth can feed the almost 8 billion people that call it home. But the challenge facing us today is how to make the practice of large-scale farming sustainable. We have learned how to use alternative energies - like solar and wind power - to run our farms. We have also learned how to use the land and the animals on it in a more environmentally friendly way. Green