Physorg: A team of UC San Diego-led atmospheric chemistry researchers moved closer to what is considered the “holy grail” of climate change science when it made the first-ever direct detection of biological particles within ice clouds. The team, led by Kerri Pratt, a Ph.D. student of atmospheric chemistry Professor Kim Prather, who also holds appointments at Scripps Institution of Oceanography as well as the Department of Chemistry and Biochemistry at UCSD, sampled water droplet and ice …