Andreas Wagner Pursues the Secrets to Evolutionary Success

Every organism responds to the world with an intricate cascade of biochemistry. There’s a source of heat here, a faint scent of food there, or the crack of a twig as something moves nearby. Each stimulus can trigger the rise of one set of molecules in an animal’s body and perhaps the fall of others. The effect ramifies, tripping feedback loops and flipping switches, until a bird leaps into the air...


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