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Comparison of bioethanol production strategies, including second-generation consolidated bioprocessing, a single-step process in which a microbe breaks down unpretreated cellulosic biomass and converts the resulting sugars into fuel.03.01.15Science Highlight

Microbe Produces Ethanol from Switchgrass Without Pretreatment

Genetic engineering allows biomass-degrading bacterium to make fuel in a single process. Read More »

A glacier in eastern Greenland flows through a long and narrow valley carved by the movement of ice.03.01.15Science Highlight

New Method Relates Greenland Ice Sheet Changes to Sea-Level Rise

Modeling approach includes the effects of ice sheet elevation and region. Read More »

Scientists have developed a new approach that uses sophisticated mathematical solutions to improve computational simulations of ecosystem water processes.03.01.15Science Highlight

New Mathematical Method Enhances Hydrology Simulations

Approach uses land-atmosphere observations to calibrate model. Read More »

Data collected from the Atmospheric Radiation Measurement Climate Research Facility’s Southern Great Plains site (shown here) was used to evaluate and compare climate model simulations of precipitation.03.01.15Science Highlight

Comparing Climate Models to Real World Shows Differences in Precipitation Intensity

Understanding the differences and similarities will help improve how models represent storm clouds and other convective processes. Read More »

Researchers are seeking to understand the chemical processes leading to secondary organic aerosol formation from isoprene compounds emitted by many species of trees including eucalyptus (shown here).03.01.15Science Highlight

Competition Not Concentration Matters when Forming Cloud-Influencing Aerosols

Nitrogen oxide has nonlinear effects on the volatility and composition of SOA based on isoprene emitted by trees. Read More »

Crystal structure of the parent compound of a calcium-strontium-based cuprate superconductor [(Ca/Sr)2CuO3]...02.01.15Science Highlight

Predicting Magnetic Behavior in Copper Oxide Superconductors

New theoretical techniques predict experimental observations in superconducting materials. Read More »

Schematic image indicating the inferred intertwining of the superconducting wave function (green) with the envelope function (blue) for the atomic magnetism.02.01.15Science Highlight

Intertwining of Superconductivity and Magnetism

Coexistence of two states of matter that normally avoid one another is revealed by inelastic neutron scattering experiments. Read More »

Electron density distribution (indicated by both the blue and red, as areas of deficiency and excess of electrons, respectively) in barium iron arsenide for undoped/nonsuperconducting and doped/superconducting alloys.02.01.15Science Highlight

New Path to Loss-Free Electricity

Atomic-scale details of electron distribution reveal a novel mechanism for current to flow without energy loss. Read More »

Oxygen ions can zigzag or take a circular route (red arrows) through this metal oxide crystal made of strontium (green), chromium (blue), oxygen (red) atoms...02.01.15Science Highlight

Bringing Order to Defects - Making Way for Oxygen to Move

New metal oxide material works at temperatures low enough to improve fuel cell efficiency. Read More »

A metamaterial that consists of a two-dimensional array of U-shaped gold structures (square background in the picture) efficiently emits terahertz frequency electromagnetic waves (red axis) when illuminated by a wavelength tunable near-infrared pump laser (blue axis).02.01.15Science Highlight

Metamaterials Shine Bright as New Terahertz Source

Discovery demonstrates how metamaterials may be used in non-invasive material imaging and sensing, and terahertz information technologies. Read More »