In this book, a breakdown of the life and work of some of history's pioneers in the study of chemistry are thoroughly explored. This biographical view provides excellent sketches for trailblazers in the area of chemistry. Articles are devoted to specific scientists, covering their contributions to their field, specifically addressing how their research, discoveries, and inventions impacted human understanding and experience. Most importantly, this book provides a chapter specifically devoted to the top scientific contributors of the 21st century, bringing readers current with both timely events and successes that have moved human kind forward.