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Many animals regulate their population density by patterns of behavior that would be easy to explain if the forces of natural selection acted to optimize group properties. But Darwinian selection acts on individuals, not groups, and most simple theories have shown group selection to be too slow ever to oppose individual selection successfully.

In this book Michael Gilpin presents a model, based on predator-prey dynamics, wherein nonlinear effects are important, so that small advantages to the selfish individual are nonlinearly amplified into disaster for his group. The result is...

*Soon to be a major film!* Join the world of Artemis Fowl, the number one bestseller by Eoin Colfer. AT JUST TWELVE YEARS OLD, ARTEMIS FOWL IS A CRIMINAL GENIUS. No scheme is too dastardly, no plot too devious. And he's just discovered that fairies are real. Poor fairies. But these are not the cuddly creatures of bedtime stories. They are armed. They are dangerous. And when Artemis captures Captain Holly Short for her fairy gold, he messes with the wrong elf. Holly isn't armed but she's incredibly dangerous, and pretty annoyed with all the kidnapping. Artemis Fowl...