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Charlotte H. Chang

@harpactes.bsky.social

2.6K followers 490 following 84 posts

👋 Follow for insights on NLP, conservation, and climate https://chang.eco One Conservancy Visiting Fellow at TNC Professor Bio/EA @PomonaCollege Alum: Smith Fellows, NIMBioS @UTK, Levin Lab @Princeton Birding enthusiast, dog lover, mom

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Charlotte H. Chang @harpactes.bsky.social · Nov 10

Hey Bluesky!

I'm here looking for a community of scientists that talk about conservation and climate change.

My previous work showed that over half of these people left Twitter after Elon Musk's takeover in 2022.
www.theguardian.com/environment/...

www.cell.com/trends/ecolo...

Environmental users abandoned Twitter after Musk takeover

In our sample of 380 000 environmentally oriented users, nearly 50% became inactive on Twitter after it was sold in October 2022, a rate much higher than a control sample. Given Twitter’s importance f...

www.cell.com

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Reposted by Charlotte H. Chang

Aarne Granlund @aarnegranlund.bsky.social · 8d

"The richest 20% of nations, with 15% of the global population, contribute more than 40% of annual ecological overshoot, whereas the poorest 40% of countries, with 42% of the global population, experience more than 60% of the social shortfall.

#Overshoot

www.nature.com/articles/s41...

Doughnut of social and planetary boundaries monitors a world out of balance - Nature

A revised ‘Doughnut’ providing a visual assessment of trends in social deprivation and planetary degradation over the past two decades shows more than doubling of global GDP accompanied by accelerating ecological overshoot but only a modest reduction in human deprivation.

www.nature.com

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Reposted by Charlotte H. Chang

Olúfẹ́mi O. Táíwò @olufemiotaiwo.bsky.social · 11d

this, to me, is art

NWSL @nwslsoccer.com · 11d

SOFIA CANTORE BACKHEEL GOAL ‼️

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Charlotte H. Chang @harpactes.bsky.social · Aug 15

I feel like a larger-scale replication study of this important topic ("a good life for all within planetary boundaries") would be really empowering for my students. So I would be keen to hear from anyone who knows about useful resources or has done something similar in their classes! #DSLC

Charlotte H. Chang @harpactes.bsky.social · Aug 15

e.g., having students work as a class to collect soil samples or bioacoustic monitoring outputs, and then working on a multi-week field + #datascience lab report activity in groups (w/ #Python or #R) where there is a cleaned class dataset but each group has distinct hypotheses.

Charlotte H. Chang @harpactes.bsky.social · Aug 15

Even these simpler, faster, and smaller-scale exercises (e.g. can fit in one 75-minute class session) were really powerful for students who have these rich, multidisciplinary interests in the environment and living more humanely together. My larger-scale activities tho have often focused on #ecology

Charlotte H. Chang @harpactes.bsky.social · Aug 15

Specifically, have the students split into teams, and examine the underlying data in the citation trail that drives this powerful conclusion. I've done some similar (smaller scale) projects with sources such as goodlife.leeds.ac.uk/download-data/ or #ourworldindata.

Download Data

Download the country-level data from our research published in the journal Nature Sustainability to use in your own analyses or teaching.

goodlife.leeds.ac.uk

Charlotte H. Chang @harpactes.bsky.social · Aug 15

#DataScience & #EnvironmentDS education community: curious about your ideas on a project-based learning module focused on addressing the climate/biodiversity/poverty triple challenge. One thought: have students read papers such as this recent publication by @jasonhickel.bsky.social & replicate it.

Jason Hickel @jasonhickel.bsky.social · Jun 13

Providing decent living standards for 8.5 billion people requires only 30% of current global energy and material use.

www.sciencedirect.com/science/arti...

How much growth is required to achieve good lives for all? Insights from needs-based analysis

Some narratives in international development hold that ending poverty and achieving good lives for all will require every country to reach the levels …

www.sciencedirect.com

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Charlotte H. Chang @harpactes.bsky.social · Aug 14

Excited that our work on nature-based climate solutions and #NLP is being shared on #TheAcademicMinute on @npr.org — thanks to everyone who made this opportunity possible.

academicminute.org/charlotte-ch...

Shout-out to my co-authors (on BSky): @jterbaugh.bsky.social @berobinson.bsky.social

Charlotte Chang, Pomona College - Mapping the Local Impacts of Global Nature-Based Carbon Mitigation - The Academic Minute

On Pomona College Week: Natural climate solutions have a role to play in fighting climate change. Charlotte Chang, assistant professor of biology and environmental analysis, explores how. Charlotte Ch...

academicminute.org

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Charlotte H. Chang @harpactes.bsky.social · Aug 14

Hehehe #budgie

Charlotte H. Chang @harpactes.bsky.social · Aug 12

Is this from The Great Derangement?

Charlotte H. Chang @harpactes.bsky.social · Aug 11

Who is working on AI frameworks for evaluation, fairness, ethics etc in conservation biology or ecology? (“Safety” is an overloaded term…) www.nature.com/articles/s41...

A practical framework for appropriate implementation and review of artificial intelligence (FAIR-AI) in healthcare - npj Digital Medicine

npj Digital Medicine - A practical framework for appropriate implementation and review of artificial intelligence (FAIR-AI) in healthcare

www.nature.com

Reposted by Charlotte H. Chang

Karen K. Ho @karenho.bsky.social · Aug 11

if you are overwhelmed, I highly recommend:
-making a list of things you don't care about being out of the loop
-cutting down on alcohol
-cleaning, organizing and decluttering your home instead of doomscrolling
-making plans with friends
-weekly therapy
-charging your phone away from your bed

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Charlotte H. Chang @harpactes.bsky.social · Aug 2

I like this vision. But how do we reconcile the tension between individual agency and collective good?

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Charlotte H. Chang @harpactes.bsky.social · Jun 26

Attention is All You Have

Charlotte H. Chang @harpactes.bsky.social · Jun 25

I don’t disagree, but I wonder how we can preserve loose ties (joy of learning, social movement formation) as platforms continue to enshittify.

Anecdotally, parts of science Twitter shifted to gated Slack/Discord groups after Musk took over. But they lost outside attention and idea sharing.

🕸️jess m. 🎃🍂 @jametc.bsky.social · Jun 24

I think AI is going to eventually tank in the longterm, but...

the only real way to combat this is single-interest communities. Forums, user comms, etc, with a barrier to entry. They become trustable knowledgebases. It's really the only way forward is to return to what worked best the first time

a text post from Michael Tonelli: "It's really unbelievable the niche parts of the internet that Al is ruining. My wife looks up crochet patterns online. It's now overrun by Al made up patterns that make no logical sense. My wife said if you tried to crochet the pattern that Al hallucinated, it wouldn't even be possible.
And it's like, why? Why is someone ruining free crochet patterns? How were they even aware of that corner of the internet? Is there a plan to make the internet so unusable that people abandon it so we don't have access to information anymore?"

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Charlotte H. Chang @harpactes.bsky.social · Jun 15

Lots of great fruit in the pawpaw’s Annonaceae family, including the (IMO) incomparable Taiwan atemoya! The pawpaw is unique as one of the only temperate members of this large, pan tropical family of delicious fruits (custard apples, soursop, and atemoya).

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Charlotte H. Chang @harpactes.bsky.social · Jun 3

Fascinating! We saw a related pattern with an earlier “eXodus” for climate/environmental peeps, but at the time, there wasn’t yet widespread BSky adoption (due to the invite only mechanism you describe). IMO your profile matching approach is really cool; thanks for sharing!
doi.org/10.1016/j.tr...

Redirecting

doi.org

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

Our essay was part of the 20th anniversary special issue for the Conservation Social Science Working Group. To see all of the great articles in this issue, please check out these links:
1️⃣ doi.org/10.1111/cobi... (OA link to our essay)
2️⃣ bit.ly/3RFqmYk
3️⃣ shorturl.at/USCbM (link to special issue)

Trends and future directions in the conservation social sciences | Social Science Working Group (SCB SSWG)

🌱 Celebrating 20 years of the Society for Conservation Biology's Social Science Working Group (SCB SSWG) #SSWG with the release of our Special Issue: Trends and Future Directions in the Conservati...

www.linkedin.com

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

Huge thanks to my incredible co-authors Susan Cook-Patton, @jterbaugh.bsky.social, Luci Lu, Yuta Masuda, @lexunit.bsky.social, @berobinson.bsky.social and funding from @pomonacollege.bsky.social, @bezosearthfund.org, & @nature.org. It's an exciting time to synthesize evidence for conservation! 🌎📊🔍

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

CRITICAL QUESTIONS REMAIN: How do we ensure ethical use of AI in conservation? How do we address English language bias? How do we validate AI-assisted findings? If you're interested in these questions, please get in touch with our team--we've got a new working group focused on this topic. 🧵: 4/6

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

Here's how ML + NLP can help:
1️⃣ Speed & scale up literature searches
2️⃣ Automate screening for relevance
3️⃣ Extract key information from studies
4️⃣ Process unstructured text data at scale
5️⃣ Identify patterns across thousands of papers
These tools can cut workload by 35-99%! ⚡️ 🧵: 3/6

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

Why does this matter? Conservation and climate science face HUGE challenges synthesizing evidence across different fields. The volume of research is growing exponentially, while disciplinary differences make it tough to integrate knowledge. Traditional manual review can't keep up! 🧵: 2/6

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Charlotte H. Chang @harpactes.bsky.social · Apr 8

NEW PAPER ALERT! 🌿🤖 Our essay on how #AI and #NLP can transform conservation evidence synthesis just dropped in #ConservationBiology. We explore how machine learning can help scientists tackle the explosion of research across disciplines to better inform conservation policy. 🧵: 1/6

Figure 1 from Chang et al. 2025, Conserv. Biol., describing how different ML-assisted and integrated tools can aid in evidence synthesis or policy analysis.

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Charlotte H. Chang @harpactes.bsky.social · Jan 3

Thanks for sharing! Happy New Years!

Charlotte H. Chang @harpactes.bsky.social · Jan 3

(Late to the party but ...) #BirdersOfBluesky: who were your First Birds Of the Year (FBOYs)?

Yard/window FBOY: A dapper + tuxedoed Black Phoebe
Binocular FBOY: A very confiding White-breasted Nuthatch
Digiscoped FBOY: An unusually out-and-about Sora

Wishing everyone a very birdy 🦜🦉 2025!

Townsend's warbler chilling in the grass

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