QuteMol-rendered image of human rhinovirus
Illustrating virion topography. Red, blue, and yellow denote the three major surface capsid proteins; examples of RNA regional motifs are colored according to predicted base-pairing fidelity. Sequence diversity within the major surface proteins contributes to the wide range of immunogenic serotypes characteristic of the "common cold."
On the Origin of Flowering Plants
Which plant was the mother of all angiosperms? In the fourth essay in Science's series in honor of the Year of Darwin, Elizabeth Pennisi discusses efforts to answer Darwin's question about how flowering plants diversified and spread so rapidly across the globe.
Cold Equations
Far from his cozy office in landlocked Utah, a mathematician grapples with the secrets of polar sea ice.
Trouble on the Final Frontier
NASA's scientific missions have enjoyed spectacular success. But significant cost overruns and launch delays jeopardize future missions.
Automating Science
Computers with intelligence can design and run experiments, but learning from the results to generate subsequent experiments requires even more intelligence.
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