A timeline of the spider fossil record -- Fossils -- Living fossils -- Chance and change -- Outward and upward -- Triumph over thin air -- Small changes, big benefits -- Spinning, running, jumping, ...
Nullius in verba -- The fact of replication -- The fact of variation -- The fact of selection -- The fact of speciation -- The fact of evolution -- Evolution in action -- The mirror-house of evolution ...
Third grade teacher Tracey Broughton teaches students at Perry Creek Elementary School in Sioux City. Iowa’s current draft of its K-12 science standards, which include changing the word “evolution” to ...
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