Book excerpt: The incredibly small bits of matter we call neutrinos may hold the secret to why antimatter is so rare, how mighty stars explode as supernovas and what the universe was like just seconds after the big bang. They even illuminate the inner workings of our own planet. For more than eighty years, adventurous minds from around the world have been chasing these ghostly particles, trillions of which pass through our bodies every second. Extremely elusive and difficult to pin down, neutrinos are not unlike the brilliant and eccentric scientists who doggedly pursue them. Ray Jayawardhana recounts in Neutrino Hunters a captivating saga of scientific discovery and celebrates a glorious human quest, revealing why the next decade of neutrino hunting could redefine how we think about physics, cosmology and our lives on Earth.