Issues
Letters
Search and Discovery
Flavor oscillation may be different in neutrinos and antineutrinos
An unanticipated violation of matter-antimatter symmetry could reconcile conflicting experimental evidence about the possible existence of sterile neutrinos.
Isotope ratios hint at a piece of pristine Earth
Could any material on Earth have remained isolated and undisturbed for 4.5 billion years? And if it did, how could we tell?
Putting quantum gases under the microscope
Microscopes with single-site resolution are vital for using ultracold atoms to simulate strongly correlated electrons in solids.
Issues and Events
Obama announces reforms to simplify and reduce export controls
Universities welcome efforts to scale back federal controls over campus research by foreign nationals.
US astronomy community sets plan to fit tight times
Balance, flexibility, and broad science mark the latest decadal survey. And, nitpicking aside, the survey is finding wide endorsement among astronomers and astrophysicists.
Suborbital research hitches a ride on commercial space cruisers
NASA hires industry to transport scientific payloads bound for microgravity environments.
Articles
Shaping optical space with metamaterials
By controlling the local electric and magnetic properties of a material, researchers can tailor the flow of light and create exotic optical devices.
Multiferroics: Past, present, and future
Working in concert, theorists and experimentalists have found promising new ways to get two traditional foes—ferroelectricity and magnetism—to coexist
The evolution of the science museum
Once resources for the scholar and serious student, science museums are now dedicated to public education. But just how institutions define and meet their educational goals is a continuing story.
Books
New Products
Obituaries
Geoffrey Ronald Burbidge
Albert Victor Crewe
Boris Peter Stoicheff
Quick Study
The customized reflections of freeform mirrors
Light that reflects off mirrors that have carefully calculated and machined shapes can produce images with surprising and useful properties.