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* It's not an earthquake -- it's an aftershock from long ago: Some "earthquakes" that occur in unusual locations may really be aftershocks of quakes centuries
* Could birth control pills alter mate choices?: Contraceptive pills may alter women's abilities to choose, compete for and retain mates, scientists say.
* Pre-"Lucy" fossils reveal secrets: The last common ancestor of chimps and humans was probably not as chimp-like as widely believed, researchers report.
* Cities work much like brains, study finds: Highway interconnections in cities are organized and evolve much like brain connections, research suggests.