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Aerial view of braided wetlands and tundra typical of the Bristol Bay watershed in Alaska.July 2014Science Highlights

Modeling Global Wetlands and Their Methane Emissions

Climate model comparisons show wetlands remain a big challenge. Read More »

A large portion of the plant cell wall contains cellulose, which consists of sugar molecules organized into cable-like structures called microfibrils.July 2014Science Highlights

Making Cellulose More Accessible for Bioconversion

Simulations and neutron diffraction reveal how amines disrupt cellulose’s structure. Read More »

Phytoplankton known as coccolithophores bloom in the Barents Sea north of Russia, their scales giving off a bright green glow.July 2014Science Highlights

Genomic Sequence of a Marine Blooming Alga

Genome variability helps explain why Emiliania huxleyi canflourish in diverse ocean habitats. Read More »

Researchers are studying how bacteria transform mercury into a toxic form in the environment that can accumulate in the food web, posing a threat to wildlife and people.July 2014Science Highlights

Multiple Species of Bacteria Convert Elemental Mercury to Toxic Methylmercury

New insights could assist in cleanup of contaminated environments. Read More »

An assessment of the ability of climate models to simulate clouds shows that newer models are better aligning with cloud satellite observations.July 2014Science Highlights

Improved Climate Model Simulations of Clouds

New models show reduction in bias associated with too many highly reflective clouds. Read More »

Researchers are genetically engineering microorganisms to produce high-energy biofuels that can directly replace petroleum in existing engines.July 2014Science Highlights

Higher Yields of Advanced Biofuels from Genetically Engineered Yeast

Strains produce “drop-in” fuels and chemicals derived from fatty acids. Read More »

Researchers have used a global climate model to assess future water demands in the agricultural, energy, industrial, and municipal sectors, concluding that freshwater availability may be insufficient in some regions.July 2014Science Highlights

Long-Term Water Projections and Climate Change

Model scenarios predict increased scarcity in the Middle East and India. Read More »

Researchers are seeking to better predict the impact of ice sheet melting in Greenland under a changing climate.July 2014Science Highlights

Greenland Ice Sheet “Sliding” a Small Contributor to Future Sea-Level Rise

Modeling experiments assess impacts of key melting behavior. Read More »

Methane emissions estimated in a recent study (A) and compared against the commonly used Emissions Database for Global Atmospheric Research (EDGAR) 4.2 inventory (B and C).July 2014Science Highlights

Some U.S. Methane Sources May Be Larger than Previously Thought

Inventories underestimate emissions from fossil fuel industry and animal husbandry, study finds. Read More »

Aerosol observations from the 2011 Las Conchas fire in New Mexico (seen here) are helping researchers gain a better understanding of wildfire effects on climate.July 2014Science Highlights

Wildfires Lead to More Warming than Climate Models Predicted

Aerosol observations shed light on impact of soot and smoke. Read More »