What makes a person who they are? This is one of the fundamental questions of human life. Scientists of the 21st century have made rapid advances in cloning and editing human DNA and cells, even if their understanding of how human characteristics are shaped is still relatively new. Readers will learn about three life-changing pieces of genetic technology--from therapeutic cloning to embryonic gene editing. By exploring these innovations and how they work, students will expand their learning of biology, genetics, and other STEM fields. At just 32 pages, Full Tilt Fast Reads help striving middle school readers build reading stamina and stay engaged with high-interest low-level content and dynamic topics.