A study of mountaintop clouds over Colorado has delivered crucial information to help answer several scientific questions, including how Saharan dust affects clouds over North America.
Cleaning up Hanford is no easy task: it is one of the world's largest and most complex environmental remediation projects. The nation's top engineering firms are on the job and the Department of Energy's PNNL is helping.
Patients with inflammatory bowel disease are more likely to see dramatic shifts in the make-up of the community of microbes in their gut than healthy people, according to a study published online in Nature Microbiology.