What are the stages of coal formation? Find out here!
Do you wonder how plants get energy from sunlight? Scroll through the article, use the diagrams, and test your knowledge about photosynthesis. Note: Videos are not available.
What is the difference between renewable and non-renewable energy? Discover the advantages and disadvantages of many types of energy resources.
Explore the science of energy. Learn where energy comes from, how we use it, measure it, and more!