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COVER False-colored scanning electron micrograph of ~8-micrometer-tall germanium crystals, separated by finite gaps, grown onto silicon pillars. In structures like this one, wafer bowing and layer cracking are absent, allowing single-crystal integration of different materials onto a silicon substrate, which serves as a platform for many applications, such as multiple-junction solar cells, x-ray and particle detectors, or power electronic devices. See page
1330. Image: Claudiu V. Falub, Laboratory for Solid State Physics, Swiss Federal Institute of Technology (ETH-Zürich)
Science
- Volume 335|
- Issue 6074|
- 16 Mar 2012
COVER False-colored scanning electron micrograph of ~8-micrometer-tall germanium crystals, separated by finite gaps, grown onto silicon pillars. In structures like this one, wafer bowing and layer cracking are absent, allowing single-crystal integration of different materials onto a silicon substrate, which serves as a platform for many applications, such as multiple-junction solar cells, x-ray and particle detectors, or power electronic devices. See page
1330. Image: Claudiu V. Falub, Laboratory for Solid State Physics, Swiss Federal Institute of Technology (ETH-Zürich)
This Week in Science
Editorial
Editors' Choice
Podcasts
The show includes governing the Earth; sex, alcohol, and fruit flies; mental health in Indonesia; and more.
Products & Materials
A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.
News of the Week
In science news around the world this week, seven local radio stations in Burkina Faso began broadcasting messages about measures parents can take to prevent and treat deadly disease in their babies and toddlers, the U.S. Senate approved the RESTORE Act, ...
This week's Newsmakers are Alexander Varshavsky of the California Institute of Technology, Richard L. Berkowitz of Columbia University Medical Center, and James Bruce Bussel of Weill Cornell Medical College, winners of the King Faisal International Prizes;...
After years of unconfirmed reports and false sightings in Mexico and Central America, scientists now know where the northern black swift (Cypseloides niger borealis) goes each winter. Last month, aerial photographer and biologist Matevž Lenarčič flew a ...
Findings
News & Analysis
On 8 March, physicists working with China's Daya Bay Reactor Neutrino Experiment announced the measurement of a crucial parameter describing the behavior of neutrinos.
This week, Merck launched a new nonprofit research institute to help academics turn their basic biology insights into drug compounds ready for human tests.
A new book has reignited debate over a long-discredited hypothesis that the first Americans came from Europe rather than Asia. Although few scientists actually support the hypothesis, some still think it merits additional testing.
At last week's 19th Conference on Retroviruses and Opportunistic Infections , research on ways to cure HIV infections received more attention than ever.
An economist with the U.S. National Oceanic and Atmospheric Administration is mailing checks for up to $500 to anglers in Massachusetts as part of an unusual study to assess the value of saltwater fisheries.
Researchers have isolated the toxins of the mushroom behind Yunnan sudden unexplained death and propose an astonishing modus operandi.
News Focus
Mental health care is desperately needed throughout the developing world. An Indonesian province is testing an unconventional approach.
U.S. research universities are being asked to improve instruction, hold down costs, and promote economic growth. Are they up to the challenge?
Letters
Books et al.
With this 16th volume, del Hoyo et al. wrap up a 20-year series that covers all extant avian species.
Writing for nonspecialists, MacCormick explains a selection of complex algorithms that we rely on daily for tasks such as determining the importance of Web pages.
A listing of books received at Science during the week ending 09 March 2012.
Policy Forum
The United Nations conference in Rio de Janeiro in June is an important opportunity to improve the institutional framework for sustainable development.
Perspectives
Membrane protein crowding may influence the biological processes that drive vesicle formation.
Sexual rejection or deprivation is connected to ethanol consumption in Drosophila.
Despite technological advances, volcano monitoring around the world is woefully incomplete.
A process based on laser-converted graphene is used to fabricate high-value energy storage material.
A protein that controls nucleic acid metabolism affects the balance between HIV infection and immune responses.
A method based on correlated measurements of electrons and ions shows that electrons of large molecules can be set into motion by strong laser fields.
The seminal work of this geneticist and microbiologist on bacteriophage contributed importantly to our understanding of fundamental genetic processes.
Brevia
High-speed observations reveal how rapid changes in cell shape powerfully eject fern spores.
Reports
A system of terahertz resonators coupled to two-dimensional electron gases presents a tunable test bed for the study of two-level physics.
Infrared laser reduction of graphene oxide creates a strong porous electrode with both high surface area and high conductivity.
A space-filling array of self-limited three-dimensional epitaxial crystals averts wafer bowing, layer cracking, and dislocation propagation.
Isotopic analysis of zircons reveals the proportion of crust formed and destroyed on continents throughout Earth’s history.
A spectrometric method tracks the different paths along which strong laser fields pull electrons out of polyatomic molecules.
Bound excited charge carriers achieve long-range separation by promotion to delocalized band states.
Distribution data for 50 species confirms that invasive plants usually expand into areas with similar climate characteristics.
Elucidation of the biosynthetic pathway of a new plant hormone variant that may be useful in agricultural settings is shown.
In laboratory experiments, male fruit flies respond to lack of sex by increasing alcohol consumption.
Whereas one fusion protein complex can fuse a vesicle with a bilayer, three are needed for efficient content release.
Membrane curvature of cellular vesicles is generated by altering the symmetry of the cargo and the rigidity of coat proteins.
Tracking of individual synaptic vesicles reveals that kiss-and-run fusion is concentrated near the center of the synapse.
Two crystal structures show the molecular bases for two pathways that rescue ribosomes that have stalled on defective messenger RNAs.
Two crystal structures show the molecular bases for two pathways that rescue ribosomes that have stalled on defective messenger RNAs.
A mutation known to cause cataracts also disables a specialized mechanosensory receptor in mice and humans.
The human immune response preserves antigenic variation in a bacterial pathogen.
