CT scans of fossil Hadrocodium skulls allowed scientists to reconstruct its brain. The olfactory bulbs, located at the front of the brain, grew steadily larger as millions of years passed. Matt Colbert/University of Texas at Austin hide caption

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Mammals Smelled Their Way To Bigger Brains
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Learning juicy details about someone can change the way you see them — literally, according to a new study. August Darwell/Getty Images hide caption

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Psst! The Human Brain Is Wired For Gossip
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Presumed Extinct, The Red-Crested Tree Rat Returns
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NASA Shoots Legos, Worms And Squid Into Space
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Radio telescopes of the Allen Telescope Array, seen here soon after their construction in 2007, gave SETI's search for intelligent alien life a big boost. Now the array, located in Hat Creek, Calif., has lost the funding it received from the California state government. Ben Margot/AP hide caption

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If E.T. Phones, Will We Hear? SETI Loses Key Funding
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