Because it generates high amounts of energy for a small amount of material, and doesn't produce as much pollution as fossil fuels.
Closed is the correct answer :)
Theoretical study of law, principally by philosophers but, from the twentieth century, also by social scientists. Scholars of jurisprudence, also known as jurists or legal theorists, hope to obtain a deeper understanding of legal reasoning, legal systems, legal institutions, and the role of law in society.