Learn about biogeography, the study of the geographic distribution of organisms, with this video from NOVA’s Evolution Lab. When a new island forms, winds and currents can bring life ashore from nearby land masses. Over time, these organisms evolve into different species. Some species are quite unique, but others have similar relatives around the world. How can a plant in the Pacific Islands be so similar to a South American plant? Organisms could move around easily when Earth’s land masses still formed the supercontinent Pangaea. When the continents split, some species were divided across multiple continents, leading to very similar descendants in distant locations.
NOVA Evolution Lab Game
Create phylogenetic trees and explore genetic relationships between species with NOVA's Evolution Lab. What could you possibly have in common with a mushroom, or a dinosaur, or even a bacterium? More than you might think. In this Lab, evaluate similarities in the traits and DNA of species, and conduct your own investigations in an open-ended interactive tree of life. Along the way, watch short animated videos that explain the evidence for evolution and illustrate it with specific examples. Come climb around the tree of life and see evolution—what some have called the greatest show on Earth—in action.http://www.pbslearningmedia.org/resource/nvev-sci-evolab/nova-evolution-lab-game/
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