A cabbage butterfly caterpillar. For tens of millions of years, these critters have been in an evolutionary arms race with plants they munch on. The end result: "mustard oil bombs" that also explode with flavor when we humans harness them to make condiments.
Courtesy of Roger Meissen/Bond LSC
Kanzi the bonobo (a species closely related to chimps) holds a pan of vegetables he cooked at the Great Ape Trust in Des Moines, Iowa, November 2011. Kanzi was taught to cook. However, a new study is the first to show that animals can acquire a cooking-like skill on their own.
Laurentiu Garofeanu/Barcroft Media /Landov
The skull of a chicken embryo (left) has a recognizable beak. But when scientists block the expression of two particular genes, the embryo develops a rounded "snout" (center) that looks something like an alligator's skull (right).
Bhart-Anjan S. Bhullar
Sir David Attenborough at the Beijing Museum of Natural History with fossil of Juramaia, as featured in the Smithsonian Channel series Rise of Animals: Triumph of the Vertebrates.
Courtesy Smithsonian Channel