This smoky atmosphere affected the amount of sun reaching earth's surface. In a new paper out today, we combined fire and atmosphere modeling with ice core measurements to show just how important this climate effect was advances.sciencemag.org/content/7/22/e…. 2/

This new study lends additional support to work by Douglas Hamilton and colleagues that was controversial and difficult to publish because we challenged the paradigm of a pristine preindustrial world nature.com/articles/s4146…. 5/

#Fire emissions in the Southern Hemisphere may have been much higher during pre-industrial times than in the present day, according to a new study published in Science Advances and featuring Desert Research Institute ice core research. Read more: ow.ly/8dB350F0kW7 #DiscoverDRI

Centuries-old smoke particles preserved in the ice reveal a fiery past in the Southern Hemisphere and shed new light on the future impacts of global climate change: buff.ly/3yYJXIA Science Advances Pengfei Liu Desert Research Institute Harvard University Center for the Environment

This is super exciting! Our daily and annual 1-km PM2.5 predictions across the contiguous US, 2000-2016, have been published on NASA SEDAC website. Please feel free to download and cite: beta.sedac.ciesin.columbia.edu/data/set/aqdh-…

We are organizing an AGU session on the past and future trends of fire activity and their impacts on climate and health. Abstract submission deadline Aug 4 #AGU21. agu.confex.com/agu/fm21/preli…

An international team of researchers led by Desert Research Institute analyzed ice core samples from Antarctica’s James Ross Island and found early human activity caused significant changes to the earth's atmosphere. The findings were released in a new nature article. ow.ly/NxkZ50Gn45L

Our latest work published Nature Communications provides strong evidence that long-term exposure to air pollution increases incidence of dementia: nature.com/articles/s4146…

We developed a global continental emission inventory of chlorine. The paper is published online today in ES&T: pubs.acs.org/doi/10.1021/ac…

Amazing news! Our daily 1-km PM2.5, NO2, and ozone predictions across the contiguous US (2000-2016) have been published on NASA SEDAC. #JoelSchwartz Please feel free to download: sedac.ciesin.columbia.edu/data/collectio… Hyperlocal 50-m PM2.5 species data are on the way (researchsquare.com/article/rs-174…).

Long-term exposure to air pollution may increase the risks for developing dementia and Alzheimer’s disease, according to a study led by Emory Public Health researchers in collaboration with colleagues at Georgia Tech and Harvard T.H. Chan School of Public Health. links.emory.edu/mk

Our new book!

Incident dementia and long-term exposure to constituents of fine particle air pollution: A national cohort study in the United States. pnas.org/doi/10.1073/pn…

I was honored to serve as Editor to this PNAS paper, which indicates that fossil fuel combustion air pollution is not just making the Earth sick, it's making us sick, too. We are in this thing together. ISEE Env Epi American Lung Association Population Health NRDC 🌎🏡 pnas.org/doi/10.1073/pn…

Our recent publication on Environmental Justice: Disparities in ambient nitrogen dioxide pollution in the United States | Proceedings of the National Academy of Sciences pnas.org/doi/10.1073/pn…

Learn how Georgia Tech is leading research at the critical intersection of energy and public health. b.gatech.edu/4doRBQv Presenters: Dan Molzahn Georgia Tech ECE Xin He, Georgia Tech College of Engineering Pengfei Liu Georgia Tech EAS Shuichi Takayama Coulter BME | Emory & Georgia Tech Laura Taylor Georgia Tech School of Economics

Thrilled to share that I’ve received the 2025 Sigma Xi Young Faculty Award at Georgia Tech! Grateful for the recognition and proud to be part of such a supportive and inspiring community. Georgia Tech EAS