Science has reached dazzling heights of discovery, transforming civilization in the process. And yet, some of the most fundamental questions remain Unsolved! In The World's 20 Greatest Unsolved Problems, John Vacca-together with more thon 60 of the world's most highly respected scientists-explains these problems in detail and describes the intellectual and technological hurdles to be overcome in order to solve them. This book is indispensable for science buffs, teachers, students, and scientists who want to keep pace with the latest developments. The World's 20 Greatest Unsolved Problems delves deep into mysteries such as the creation of the universe, dark matter, the quantum theory of gravity, protein folding, free will, consciousness, earthquake prediction, Fullerenes, the quantum mechanical vacuum, storing or eliminating nuclear waste, and more. No other resource explains science's most compelling dilemmas with such clarity and authority, and nowhere else can you share the expertise of so many brilliant minds! You'll find. Complex topics made intelligible, as only experts in their fields can. Coverage of the key problems expected to dominate the next 40 years of scientific research. The World's 20 Greatest Unsolved Problems is must reading for anyone teaching science or performing scientific research. It also will fascinate the moderately technical reader or scientific novice.