An uncontacted tribe inhabits an island in the Indian Ocean, living as simple hunter-gatherers. They are hostile to outsiders, and have not developed agriculture or writing.

Norman Borlaug, an agricultural scientist, developed new strains of crops which yielded 4 times as much food . He is said to have saved the lives of over a billion people, making him one of the most influential men in human history.

Lions communicate through a range of behaviours and their expressive movements are very highly developed. They will perform peaceful tactile actions such as licking each other and rubbing heads. Head rubbing, or nuzzling, is a common greeting behaviour for lions. They also communicate through a variety of vocalisations including purrs, snarls, miaws and hissing. Their vocalisations also vary in intensity and pitch.