Ornithologist Richard Prum shares his knowledge of the natural math of feather patterning. Simple feather patterns can be predicted using mathematical models called Turing reaction-diffusion equations. As a feather grows, each new cell must decide whether it will receive pigment or not, depending on overlapping chemical gradients and the pigmentation of neighboring cells. Richard Prum is the William Robertson Coe Professor of ornithology, and head curator of vertebrate zoology at the Peabody Museum of Natural History at Yale University.
Harvester ants search a lovely variety of flowers for nectar and water. Ants are attracted to sweet foods (as well as fatty), and these are on the lookout for flower nectar, along with hydration from giant water droplets. This program was made with the assistance of Les Greenberg and the Universi...
Recording the anthill in its splendor of minute sprawling activities. A colony of Harvester ants patrols the ground, on-duty and at rest. An ant colony is optimized for efficiency, but that doesn't mean that all ants are working all the time. In fact, having a surplus of members is an important f...
