Physics
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We summarize the week's scientific breakthroughs every Thursday.
- 			 Tech TechCloaked eye still seesResearchers have proposed a model that would allow sensors to send and receive information virtually undetected. 
- 			 Humans HumansIn teeth, more cracks are better than oneCracks in tooth enamel, called tufts, distribute force and shield a tooth from fracture, researchers report. 
- 			 Materials Science Materials ScienceDouble-laser approach makes one thin lineErasing and stenciling could refine tiny printing for sculpting nano-sized devices. 
- 			 Physics PhysicsRadioactive cigarettesPolonium remains an underappreciated factor in the lung-cancer risk posed by cigarettes. By Janet Raloff
- 			 Chemistry ChemistryBubbles turn on chemical catalystsMechanical force could help chemical compounds spur reactions when the time is right. 
- 			 Materials Science Materials ScienceViruses could power devicesViruses — the biological kind — could be used to construct more efficient, environmentally friendly lithium ion batteries 
- 			 Physics PhysicsSpin control for technologyLong-lived helix offers a new way to keep electron spin stable and in sync 
- 			 Astronomy AstronomyPlanck by PlanckThe launch of the European Space Agency’s Planck mission, set for late April or early May, will put into orbit a new tool —the microwave equivalent of polarized sunglasses — that may offer a view of the dawn of time. By Ron Cowen
- 			 Chemistry ChemistryExxon Valdez oil lingers, as does its toxicityEven 20 years after a major oil spill, barely degraded pockets of the oil persist within some intertidal beaches, research shows. By Janet Raloff
- 			 Space SpaceQuantum entanglement can be too much of a good thingAn overdose of the spooky connection can break down quantum computing systems, researchers find. 
- 			 Physics PhysicsNever mind the Pollock ‘fractals’Scientists strengthen claim that fractal analysis is moot. 
- 			 Chemistry ChemistryHelping molecules reach metaResearchers find a simple way to get molecules into the meta position on an aromatic ring, opening fresh possibilities for making new compounds.