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A physics travelogue p24
David Lindley reviews From Clockwork to Crapshoot: A History of Physics by Roger G. Newton
doi:10.1038/445024b
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On the right path p25
Joseph Mazur reviews The Best of All Possible Worlds: Mathematics and Destiny by Ivar Ekeland
doi:10.1038/445025a
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Top of pageEssay
Concept
Constructive memory: The ghosts of past and future p27
A memory that works by piecing together bits of the past may be better suited to simulating future events than one that is a store of perfect records.
Daniel L. Schacter and Donna Rose Addis
doi:10.1038/445027a
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See also: Editor's summary
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Top of pageNews and Views
Planetary science: Titan's lost seas found p29
When the Cassini spacecraft found no methane ocean swathing Saturn's moon Titan, it was a blow to proponents of an Earth-like world. The discovery of northern lakes on Titan gives them reason for cheer.
Christophe Sotin
doi:10.1038/445029a
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Neurobiology: Scent secrets of insects p30
The perception of carbon dioxide provides insects with sensory data on their environment, and informs many insect behaviours. It seems that this sense relies on two dedicated neural receptors.
Rachel I. Wilson
doi:10.1038/445030a
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Bioorganic chemistry: A sweet synthesis p31
Peptides and proteins with sugars attached have many desirable biological properties, but their chemical synthesis is a technical challenge. An ingenious take on an old idea might simplify things considerably.
Linda C. Hsieh-Wilson
doi:10.1038/445031a
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50 & 100 Years Ago p32
doi:10.1038/445032a
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Developmental biology: This worm is not for turning p33
Molecular investigations of the origin of the dorso-ventral axis in an obscure marine invertebrate illuminate one of the longest-running debates in evolutionary biology — that over the origin of vertebrates.
Henry Gee
doi:10.1038/445033a
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Materials science: Alloys go with the grain p34
How do metallic alloys solidify from their original liquid state? A study of the deformation of cooling alloys confirms what had been suspected for some time: solidifying alloys bear exciting similarities to granular materials.
Christophe L. Martin
doi:10.1038/445034a
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Evolutionary biology: Oxygen at life's boundaries p35
Proteins are made of amino acids. But amino acids are made of atoms. Exploration of this self-evident principle opens up fresh perspectives on the evolution of biological membranes and multicellular life.
Peggy Baudouin-Cornu and Dominique Thomas
doi:10.1038/nature05521
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Neurobiology: Hit and miss p36
Helen Dell
doi:10.1038/445036a
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Cosmology: Ripples of early starlight p37
After all known sources are accounted for, puffy blobs of infrared light persist on deep-field telescope images. Evidence is mounting that these could be the signatures of stars in early 'protogalaxies'.
Craig J. Hogan
doi:10.1038/445037a
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Top of pageBrief Communications Arising
Neurophysiology: Hodgkin and Huxley model — still standing? pE1
David A. McCormick, Yousheng Shu and Yuguo Yu
doi:10.1038/nature05523
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Neurophysiology: Hodgkin and Huxley model — still standing? (Reply) pE2
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