One of today's most controversial drugs, marijuana is seen by some as a useful medicine and by others as a dangerous drug that must remain outlawed. This title explores how marijuana affects the body, the laws and policies surrounding it, and the debate around its legalization. Features include a glossary, references, websites, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.