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Prostate Cancer Test Gets a Failing Grade

U.S. health panel finds more harm than good in PSA screening Read more...

ScienceNOW, May 21, 6:37pm

Life at the Top Can Be Good for Your Health

Study suggests that high-ranking baboons have stronger immune systems Read more...

ScienceNOW, May 21, 4:40pm

Just a Spoonful of Castor Oil

Study reveals the molecular mechanism of castor oil Read more...

ScienceNOW, May 21, 4:15pm

NRC Head Resigns

Gregory Jaczko to leave nuclear regulatory agency Read more...

ScienceNOW, May 21, 4:12pm

ScienceShot: Pigment Preserved in 162-Million-Year-Old Fossils

Study finds traces of ancient ink Read more...

ScienceNOW, May 21, 3:12pm

Intruder Arrested at GM Field Trial

Researchers say attack caused property damage, but did not affect the experiment Read more...

ScienceNOW, May 21, 1:41pm

Senate Dips Toe Into STEM Immigration Reform Stream

Two bills would make it easier for those with U.S. graduate degrees to gain green cards Read more...

ScienceNOW, May 18, 6:10pm

Alzheimer's Research Strategy Announced

Recommendations will help guide U.S. plan to develop treatments by 2025 Read more...

ScienceNOW, May 18, 5:50pm

ScienceShot: Disposable Keypads

High-tech paper gets buttons Read more...

ScienceNOW, May 18, 4:43pm

Supervolcano Drilling Plan Gets Go-Ahead

Some scientists believe the international project puts lives at risk in Naples Read more...

ScienceNOW, May 18, 3:11pm

Researchers Meet Protesters in TV Debate

Opponents of genetically modified crops unclear on their plans to destroy test field of GM wheat Read more...

ScienceNOW, May 18, 1:58pm

Roots of Racism

Humans everywhere divide the world into "us" and "them." Why are we so tribal? Read more...

ScienceNOW, May 18, 10:49am

[Perspective] Cell Biology: Ancient Sensor for Ancient Drug

A common drug has an unexpected effect on a metabolic enzyme that stimulates fat utilization. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Quantitative Sequencing of 5-Methylcytosine and 5-Hydroxymethylcytosine at Single-Base Resolution

A sequencing method can discriminate epigenetically modified cytosine nucleotides within embryonic stem cell DNA. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Structures of Cage, Prism, and Book Isomers of Water Hexamer from Broadband Rotational Spectroscopy

Observing three distinct water clusters in the same experiment resolves long-standing questions about their relative stabilities. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] AID-Driven Deletion Causes Immunoglobulin Heavy Chain Locus Suicide Recombination in B Cells

Recombination-induced deletion of the immunoglobulin heavy chain gene in activated B cells may influence B cell homeostasis. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Strongly Interacting Rydberg Excitations of a Cold Atomic Gas

Illumination of an ensemble of cold rubidium atoms ultimately leads to high-level excitation of just a single atom. Read more...

Science: Current Issue, May 17, 9:10pm

[Perspective] Chemistry: Active Site of an Industrial Catalyst

Surface steps caused by stacking faults or twin boundaries in copper nanoparticles are key to the activity of the methanol synthesis catalyst. Read more...

Science: Current Issue, May 17, 9:10pm

[Perspective] Chemistry: NMR Tools for Determining the Structure of Plutonium Materials

The ability to observe plutonium-239 magnetic resonance signals should aid in environmental studies and the development of waste-storage materials. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] The Ancient Drug Salicylate Directly Activates AMP-Activated Protein Kinase

A possible molecular mechanism of action for a metabolite of aspirin is described. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Aerobic Microbial Respiration in 86-Million-Year-Old Deep-Sea Red Clay

Microbes in Pacific sediments grow very, very slowly. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Multiple Spectral Inputs Improve Motion Discrimination in the Drosophila Visual System

Fly photoreceptors that detect colors also contribute information to the processing of motion. Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue Perspective] Adapting to a Multicultural Future

Authors: Richard J. Crisp, Rose Meleady Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Observation of 239Pu Nuclear Magnetic Resonance

The long-sought magnetic resonance signal of the plutonium nucleus has been detected in a sample of solid plutonium dioxide. Read more...

Science: Current Issue, May 17, 9:10pm

New Products

A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers. Read more...

Science: Current Issue, May 17, 9:10pm

[Podcast] Science Podcast

The show includes a special show exploring human conflict, including strife among our primate ancestors, the biological underpinnings of racism, and the fundamentals of "peace systems." Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue/Review] Life Without War

Author: Douglas P. Fry Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Randomized Government Safety Inspections Reduce Worker Injuries with No Detectable Job Loss

It may be feasible to achieve employee safety while keeping businesses viable. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Cost-Benefit Tradeoffs in Engineered lac Operons

A close look at a paradigmatic system accounts for the costs due to protein activity versus expression and folding. Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue Perspective] Are We Winning the War Against Posttraumatic Stress Disorder?

Author: Richard J. McNally Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue Perspective] The Antiquity of Empathy

Author: Frans B. M. de Waal Read more...

Science: Current Issue, May 17, 9:10pm

[Report] How Hibernation Factors RMF, HPF, and YfiA Turn Off Protein Synthesis

Three crystal structures show why bacteria stop making proteins when they enter the stationary phase. Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue News] The Ultimate Sacrifice

Author: Ann Gibbons Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue News] In Battle: Fighting Rituals

Author: Elizabeth Pennisi Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue News] Gender and Violence

Author: Mara Hvistendahl Read more...

Science: Current Issue, May 17, 9:10pm

[Perspective] Physics: Room for Just One Photon

Ensembles of cold atoms excited up to Rydberg states can be used to manipulate and control interactions between single photons. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] The Active Site of Methanol Synthesis over Cu/ZnO/Al2O3 Industrial Catalysts

Catalysis is favored by stepped copper nanoparticles decorated with zinc oxide, which promotes stronger intermediate binding. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Water-Mediated Proton Hopping on an Iron Oxide Surface

The presence of adsorbed water enhances proton diffusion, likely through a hydronium ion transition state. Read more...

Science: Current Issue, May 17, 9:10pm

[Report] Conspecific Negative Density Dependence and Forest Diversity

Tree seedlings have a harder time establishing themselves in forests containing many adults of the same species. Read more...

Science: Current Issue, May 17, 9:10pm

[Special Issue Perspective] Warriors, Levelers, and the Role of Conflict in Human Social Evolution

Author: Samuel Bowles Read more...

Science: Current Issue, May 17, 9:10pm

[Perspective] Cell Biology: An Alternative Route for Nuclear mRNP Export by Membrane Budding

Nuclear export of mRNA, previously thought to happen exclusively through nuclear pore complexes, may also occur via a membrane-budding mechanism. Read more...

Science: Current Issue, May 17, 9:10pm