Dark-field imaging is demonstrated with a conventional hard-x-ray source
Bertram M. Schwarzschild
pág. 12
Elementary excitations in spin ice take the form of magnetic monopoles
Mark Wilson
pág. 16
Antarctic radar survey reveals a subglacial volcanic eruption
Johanna L. Miller
pág. 17
Moore looks beyond the law
Jermey N. A. Matthews
pág. 20
Sea Perch is a fun, hands-on approach to teaching science
David Kramer
pág. 22
DOE aid to Russian weapons scientists said to abet Iran
pág. 23
Hopes dim for DOE science budget reprieve
pág. 24
Deemed export controls expected to be eased
pág. 26
Web watch
Charles Day
Canada abolishes science adviser post
Toni Feder
pág. 27
Magnetoreception in animals feature article
Sönke Johnsen, Kenneth J. Lohmann
pág. 29
Little cup of helium, big science
Dirk van Delft
pág. 36
Alternatives to cosmological inflation
Robert Brandenberger
pág. 44
LED luminaires-a whole new light
Kevin Dowling
pág. 74
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