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Illustration of the catalytic oxygen reduction reaction on the surface of platinum-nickel nanoframes with multilayered platinum skin structure.March 2015Science Highlights

Multimetal Nanoframes Improve Catalyst Performance

Concentrating noble-metal catalyst atoms on the surface of porous nano-frame alloys shows over thirty-fold increase in performance. Read More »

Palladium-nickel nanoparticles (top structural model) are synthesized and then exposed to reactive gases (lower right) while being probed with high-energy x-rays.March 2015Science Highlights

Optimizing Atomic Neighborhoods for Speedier Chemical Reactions

Clusters with longer separations between atoms had enhanced catalytic activity. Read More »

Depiction of carbon nanotube (gray) inserted into a cell membrane, with a single strand of DNA (gold) passing through the nanotube.March 2015Science Highlights

Spontaneous Formation of Biomimetic, Nanoporous Membrane Channels

Carbon nanotubes insert into artificial and active cell membranes, reproducing major features of biological channels. Read More »

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.March 2015Science Highlights

Microbe Produces Ethanol from Switchgrass Without Pretreatment

Genetic engineering allows biomass-degrading bacterium to make fuel in a single process. 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).March 2015Science Highlights

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 »

In the Community Land Model with coupled carbon and nitrogen cycles (CLM-CN), the carbon and water coupling in leaf-level photosynthetic processes was not linked to nitrogen limitation.March 2015Science Highlights

Model Captures How Nitrogen Limitation Affects Hydrological Processes

Refinement addresses previous inaccuracies in plant growth from elevated carbon dioxide in Community Land Model. Read More »

Climate researchers are studying ways to more accurately model the Madden-Julian Oscillation, a large-scale atmospheric circulation pattern associated with rainfall and drought across the tropics, including Indonesia, (shown here).March 2015Science Highlights

Heat’s Role in the Madden-Julian Oscillation

Study shows low-level atmospheric heating is critical for realistic MJO simulations. Read More »

Scientists have developed a new approach that uses sophisticated mathematical solutions to improve computational simulations of ecosystem water processes.March 2015Science Highlights

New Mathematical Method Enhances Hydrology Simulations

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

To better understand the complex processes involved in wood formation, researchers have developed a new method to study genetic regulatory mechanisms in poplar, a potential bioenergy feedstock (shown here).March 2015Science Highlights

Genetics of Wood Formation

Researchers identify genetic regulatory networks that influence poplar wood formation, a key bioenergy plant. Read More »

A glacier in eastern Greenland flows through a long and narrow valley carved by the movement of ice.March 2015Science Highlights

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

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