{"product_id":"9780674037847","title":"Punctuated Equilibrium","description":"In 1972 Stephen Jay Gould took the scientific world by storm with his paper on punctuated equilibrium. Challenging a core assumption of Darwin's theory of evolution, it launched the controversial idea that the majority of species originates in geological moments (punctuations) and persists in stasis. Now, thirty-five years later, Punctuated Equilibrium offers his only book-length testament on a theory he fiercely promoted, repeatedly refined, and tirelessly defended.","brand":"Harvard University Press","offers":[{"title":"Default Title","offer_id":47124860174576,"sku":"9780674037847","price":27.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780674037847_p0.jpg?v=1769846053","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780674037847","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}