Climate scientist and photographer from the Southwestern US
Salt Lake City, Utah, US
Joined April 2012
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You've probably heard wildfire smoke is bad for your health, but how bad, how far from the fire?
New in Sci Reports: low-level smoke (10–50 µg/m³) drives more heart attacks, heart failure, AFib, COPD & PE cases in the US.
doi.org/10.1038/s41598-026-7…
Our new @NatureComms paper: urban trees halve the heat island globally, but cooling skews to wealthy, suburban areas. Trees offset only ~10% of mid-century warming (SSP2-4.5) in urban areas, ~20% under max planting. Emissions cuts are still essential
doi.org/10.1038/s41467-026-7…
Grateful for the excellent coverage of our new heat & livability paper from Todd Woody (@greenwombat) at @business, @jonathanwatts at the @guardian, and @tomjennings at @nature_org
Bloomberg: bloomberg.com/news/articles/…
Guardian: theguardian.com/environment/…
TNC: nature.org/en-us/newsroom/un…
🚨 New paper in ER:H - Global heat livability limits doubled since 1950s
Older adults: 600→900 hrs/year of dangerous heat Younger adults: 25→50 hrs/year
~25% of people live in "survivable but not livable" zones for older adults
doi.org/10.1088/2752-5309/ae…
#ClimateChange #HeatStress
Graphs from our paper (Fig. 5) showing growth of global population exposure to outdoor livability-limiting heat for younger adults (top, blue) and older adults (bottom, red) - note the spikes in El Niño years (red dots), and how heat exposure continues to spike in 2024 (!).
Big thanks to @justinehausheer for her nice piece on our new @ScienceMagazine review paper on forests!
For Climate Adaptation, Forests Offer More Than Carbon Storage blog.nature.org/science-brie…
New in Science 🌳
Forests aren't just carbon sinks, they protect people from climate extremes. In the tropics, intact forests cool by 6°C.
But heat from deforestation could reduce safe work conditions for ~3M people & is linked to ~28k deaths/yr.
science.org/doi/10.1126/scie…
Grateful to @nature_org media team (esp Tom Jennings and Robyn Day) for this excellent summary of our new @EarthsFutureEiC paper on heat inequity in the US. Great to see our science reaching wider audiences! nature.org/en-us/newsroom/gl…
🔥 NEW paper in @EarthsFutureEiC: Vulnerable US communities already face ~13 extra days/yr of dangerous heat (>95°F/35°F). With 2°C warming, this gap widens to nearly 3 weeks/yr.
Climate inequity in the US grows with warming.
📊 doi.org/10.1029/2025EF006463
@theAGU @DukeEnvironment
The exec administration plans to dismantle NCAR, the backbone of US climate and weather science.
As a student, I trained at NCAR and was mentored by brilliant, careful scientists. I now rely on their data and expertise.
If in the US, contact your reps:
agu.quorum.us/campaign/15156…
🚨 Applications open for the Penn–TNC Sustainability & Conservation Science Postdoc Fellowship!
💰 $70K stipend + research/travel funds
🌍 Climate & conservation projects
📅 Deadline: Jan 30, 2026
🔗 Details: viest.upenn.edu/sustainabili…
#ClimateScience #Postdoc
We contributed to a new FAO report on forests & ag Forests cool landscapes, sustain crops, & protect workers.
🌡️ Deforestation raises temps by 3–5 °C → unsafe work hours & potential ~28k heat-related deaths/yr.
🌳 Forest conservation = climate adaptation.
openknowledge.fao.org/items/…
🚨 Funding Alert: Allen Family Philanthropies is offering $10M for projects that accelerate Natural Climate Solutions (NCS) in the U.S. through science & tech innovation. LOIs due Jan 15, 2026. Webinar Dec 9. allenphilanthropies.org/acce… #ClimateSolutions #NCS #FundingOpportunity
🚨 New paper alert!
Migrant workers in India face rising indoor & outdoor heat stress, with labor capacity already down ~10% in key cities.
Climate warming + El Niño = even worse risks.
Proud to co-author this work in Earth’s Future.
🔗 doi.org/10.1029/10.1029/2025…
🚨 AGU talk alert!
Presenting at #AGU25 in New Orleans — showing how extreme heat is already limiting safe physical activity for billions, especially older adults.
📅 Dec 15, 4:16PM CST
📍 Room 298-299
#ClimateHealth #ExtremeHeat #Livability
Want to learn more about estimating how heat limits human livability on a warming planet? Come to my talk at #AMS2025 Tuesday, 14 Jan 2025 at 9:00 AM (CT) in the Session "Novel Assessment of Heat Exposure and Risk" ! @AMS_Health
Luke Parsons retweeted
👋❤️🔥Please! Like and Repost! I'm participating in #GeoHealth 2024 #DataVizCompetition with the our new liveability metric to heat from "A physiological approach for assessing human survivability and liveability to heat in a changing climate" nature.com/articles/s41467-0… @JenniVanos
#GeoHealth #DataVizCompetition To vote for this visualization, simply click “like” and “repost”!
6. Liveability in extreme heat: How much could you do in the heat while staying safe? by Gisel Guzman @GiselGuzmnE
Figure:
drive.google.com/open?id=1sN…
Thanks to @CC_Yale for covering our recent @OneEarth_CP paper (doi.org/10.1016/j.oneear.202…) on the rising threat of humid heat and climate change threatening outdoor workers in tropical regions: yaleclimateconnections.org/2…
Thanks to @KashaPatel for leading the @washingtonpost article on how various factors can affect how we cope with the heat- everything from alcohol to caffeine to prescription medications to age+health.
washingtonpost.com/climate-e…
