One day, some 60 years ago, an obscure young natural scientist decided to test how things work in nature by deliberately changing the natural order. What he discovered was a very basic fact of life. A rule of life, actually. Using a tide pool as his lab, and starfish as his study group, he introduced a revolutionary way of understanding nature’s elaborate, extensive and delicate chain of hidden connections. His methodology was quickly adopted by a small band of similarly obscure scientists, young men and women, and their tests all led to the same results. Their story, recounted in The Serengeti Rules, is uniquely hopeful as it reveals a proven fix, six decades in the making, to the modern bugaboo of biodiversity collapse.