Life underground

August 19th, 2014
Water_cover

A PNNL team builds models of deep-earth water flows that affect the tiny organisms that can make big contributions to climate-changing gases.

More...

Supernova shocks

May 6th, 2014
In this false-color image, NuSTAR data, which show high-energy X-rays from radioactive material, are colored blue. Lower-energy X-rays from non-radioactive material, imaged previously with NASA’s Chandra X-ray Observatory, are shown in red, yellow and green. (NASA/JPL-Caltech/CXC/SAO.)

More than 10 years after simulations first suggested its presence, observations appear to confirm that a key instability drives the shock behind one kind of supernova.

More...

After the thaw

February 19th, 2014
Permafrost creates a polygonal landscape, irregularity that makes simulating thawing’s impact on climate change a challenge requiring advanced algorithms and high-performance computers. (Photo: Konstanze Piel, Alfred Wegener Institute.)

Simulations of melting permafrost promise changes in climate modeling.

More...