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Tessa Hill

@tessahill.bsky.social

16K followers 2.2K following 520 posts

Climate change, oceans, blue carbon and coastal communities. Professor, researcher, educator, author. 🌊 📕: At Every Depth @ateverydepth.bsky.social AtEveryDepth.com bio.site/Tessahill

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Tessa Hill @tessahill.bsky.social · Nov 22

Ok, I’m loving the starter packs! This one is for women (inclusively defined) in Ocean Science.

You need more ocean 🌊 in your feed! Follow these folks.

If you would like to be added please just let me know 👋 … if I forgot you, please don’t be offended, it was an accident! go.bsky.app/7MdiLgo

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Reposted by Tessa Hill

Frog and Toad Bot @frogandtoadbot.bsky.social · 13h

Then Toad fell asleep.

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Joshua Weitz @joshuasweitz.bsky.social · 1d

MIT says no to the Trump admin higher-ed compact clearly and emphatically. Other universities would be well served to read, remix, and respond similarly.

"In that free marketplace of ideas, the people of MIT gladly compete with the very best, without preferences."

orgchart.mit.edu/letters/rega...

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Damian Carrington @dpcarrington.bsky.social · 1d

Nestle quietly exits global initiative to reduce dairy methane emissions

#climatecrisis
HT @carbonbrief.org
www.latimes.com/business/sto...

Nestle quietly exits global initiative to reduce dairy methane emissions

www.latimes.com

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Gale Sinatra @galesinatra.bsky.social · 1d

That’s not how science works dip shit.

Aaron Rupar @atrupar.com · 1d

RFK Jr on Tylenol and autism: "It is not proof. We're doing the studies to make the proof."

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Tessa Hill @tessahill.bsky.social · 2d

It’s been fun for me so far, and that matters a lot these days ♥️

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Kate Starbird @katestarbird.bsky.social · 3d

Henry Farrell on the Trump admin’s proposed “compact” for universities, arguing that the rollout signals weakness, and that academics need to band together to reject this authoritarian attack on university independence and academic freedom.

Gift link: www.nytimes.com/2025/10/08/o...

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Tessa Hill @tessahill.bsky.social · 3d

Right now my whole syllabus is on Canvas as both text & “modules” - but yes! Maybe at the end of the class I could consolidate everything & share as a document? This is my first time teaching this but I’m thinking of offering it a 2nd time so that will be good motivation to get more organized 😂

Tessa Hill @tessahill.bsky.social · 3d

I’m doing on online summary of my class on Rachel Carson each week 🍃 🐦 follow along if you’d like to read with us!

Tessa Hill @tessahill.bsky.social · 3d

Ok, if you are following along, assignments for Silent Spring reading for week 3 are:

Chapters 4-6,

plus two articles online: www.acs.org/education/wh...

Legacy of Rachel Carsons Silent Spring National Historic Chemical Landmark - American Chemical Society

American Chemical Society: Chemistry for Life.

www.acs.org

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Tessa Hill @tessahill.bsky.social · 3d

Students also selected from a list of scholars that are carrying on Carson’s work today. They’ll do a presentation about what these folks work on. The list included @jambeckresearch.bsky.social @smbrander.bsky.social @rosannaxia.bsky.social and many others, so these presentations will be amazing!

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Tessa Hill @tessahill.bsky.social · 3d

Discussion groups in class this week focused on a few questions, including:

- Why did Carson start the book the way she did?
- if Carson was to write this story today, what might she write about?
- What surprised you about the first few chapters?

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Tessa Hill @tessahill.bsky.social · 3d

And, www.theopennotebook.com/2022/01/18/r...

Rosanna Xia Unearths the Story of a Decades-Old DDT Dump off California’s Coast - The Open Notebook

The waters off Southern California’s picture-perfect Catalina Island conceal a toxic cache from decades ago: submerged barrels seeping DDT on the seafloor. In a longform story for the Los Angeles Time...

www.theopennotebook.com

Tessa Hill @tessahill.bsky.social · 3d

Ok, if you are following along, assignments for Silent Spring reading for week 3 are:

Chapters 4-6,

plus two articles online: www.acs.org/education/wh...

Legacy of Rachel Carsons Silent Spring National Historic Chemical Landmark - American Chemical Society

American Chemical Society: Chemistry for Life.

www.acs.org

Tessa Hill @tessahill.bsky.social · 5d

Yes, this and others by Lubchenco are helpful!

Tessa Hill @tessahill.bsky.social · 5d

Working on a project that requires pulling together a lot of literature on public engagement/ community engagement in marine science disciplines. I’ve done a traditional literature search - but if you have a favorite project, paper, or scientist in this realm, please post a link or DM me! #oceans

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Tessa Hill @tessahill.bsky.social · 7d

👏🏼👏🏼👏🏼😍

UC Davis Coastal and Marine Sciences Institute @ucdmarinescience.bsky.social · 7d

Elisabeth Sellinger and Karolina Zabinski, PhD candidates at @ucdavis.bsky.social, study how #seagrass, sediments & #shellfish adapt under stress, while also navigating uncertainty in their own careers. Both kinds of resilience rely on federal support: arcg.is/1KTj02

A panoramic view of a seagrass meadow from the water level, with blue skies above it.

Reposted by Tessa Hill

Governor Gavin Newsom @governor.ca.gov · 8d

IF ANY CALIFORNIA UNIVERSITY SIGNS THIS RADICAL AGREEMENT, THEY'LL LOSE BILLIONS IN STATE FUNDING — INCLUDING CAL GRANTS — INSTANTLY.

CALIFORNIA WILL NOT BANKROLL SCHOOLS THAT SELL OUT THEIR STUDENTS, PROFESSORS, RESEARCHERS, AND SURRENDER ACADEMIC FREEDOM.

New York Times: "Trump Administration Asks Colleges to Sign ‘Compact’ to Get Funding Preference."

The White House asked nine top universities to pledge support for President Trump’s agenda to help ensure access to research funding.

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Dr. Crystal A. Kolden @pyrogeog.bsky.social · 8d

Published today: our new paper showing a 44-year trend of increasing global wildfire disasters (fatalities and economic losses) due to climate change-induced extreme weather. www.science.org/doi/10.1126/...

Climate-linked escalation of societally disastrous wildfires

Climate change and land mismanagement are creating increasingly fire-prone built and natural environments. However, despite worsening fire seasons, evidence is lacking globally for trends in socially ...

www.science.org

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Tessa Hill @tessahill.bsky.social · 9d

Assignments for Week 2:
Read chapters 1-3
And, review this exhibit: www.environmentandsociety.org/exhibitions/...

Rachel Carson’s Silent Spring, a Book that Changed the World

www.environmentandsociety.org

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Tessa Hill @tessahill.bsky.social · 9d

We watched some of this presentation by Linda Lear, Carson biographer: m.youtube.com/watch?v=kIlO...

Rachel Carson and Her Friends: A Talk by Acclaimed Biographer Linda Lear

YouTube video by Nature Forward

m.youtube.com

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Tessa Hill @tessahill.bsky.social · 9d

So, if you’d like to follow along, here goes Week 1!

We started with some reflection questions, including:

When you think of Carson, what comes to mind?

What do you think Carson’s legacy is?

What are you curious to learn more about?

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Tessa Hill @tessahill.bsky.social · 9d

In the class, we are reading Silent Spring, along with additional supplemental materials.

Photo of the cover of Silent Spring by Rachel Carson. The cover is green, with a drawing of a leaf and a bird superimposed.

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Tessa Hill @tessahill.bsky.social · 9d

In case you need something … less dark… on your timeline:

This week I started my seminar focused on the legacy of Rachel Carson.

I’m thinking I’ll post here what we are reading/watching/doing, and if you are interested, you could follow along. Like a bit of a Carson book group. 📕 🐦

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Climate Crisis Advisory Group @climatecrisisag.bsky.social · 10d

CCAG member Tessa Hill spoke with We Don’t Have Time about CCAG’s report on methane at New York Climate Week.

By cutting methane emissions, we can deliver affordable, available and urgent cooling within years – buying time to accelerate the transition to a safer future.

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Katie Mack @astrokatie.com · 10d

That's quite the chart annotation.

www.nature.com/articles/d41...

A chart of "Major concerns of PhD candidates." The top text says, "Financial pressures top the list of concerns faced by PhD candidates, but concerns differ among the sexes. Those studying in the United States rank the political landscape as their main worry." The chart shows that in the full survey, political landscape is the biggest concern for about 20% of students (a bit higher for women than men) but there's an annotation saying "In US PhD students, this rose to 64%". Overall, the highest-rated concern was financial pressures at around 40%.

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Kevin J. CREATURE @kevinjkircher.com · 13d

Methane from US oil and gas infrastructure causes more climate change than the entire US buildings and agriculture sectors. It has surged since ~2007 when the fracking boom began. Nations who are considering importing US natural gas should think carefully about its underestimated climate impacts.

Kevin J. CREATURE @kevinjkircher.com · Jun 30

New paper. I wish this wasn't the case, but most progress on reducing US greenhouse gas emissions is likely spurious. Why? EPA underestimates methane emissions from oil and gas. Relevant today as Repubs vote to gut IRA's methane monitoring/mitigation program. 🧵

authors.elsevier.com/a/1lL4K_6se4...

Two graphs from the paper.

The left graph shows US net greenhouse gas emissions from 1990 to 2022. The official EPA estimates decline fairly steadily from 6.6 gigatonnes per year in 2005 to 5.5 in 2022 (17% below 2005 levels), largely reflecting natural gas displacing coal for electricity generation. The adjusted estimates, which reflect independent measurements of methane emissions from oil and gas infrastructure, end at 6.3 gigatonnes per year in 2022 (only 5% below 2005 levels).

The right graph shows 2022 emissions increasing linearly with the assumed global warming potential of methane. Climate scientists are divided on whether to use the 100-year GWP, 20-year GWP, or something in between. With methane warming impacts assessed via the 20-year GWP, the central 2022 emissions estimate is 7.9 gigatonnes per year - 20% *above* the EPA's official 2005 estimate.

Caption: Figure 1: Left: United States net greenhouse gas emissions over time. Right: Scaling of 2022 net emissions with methane’s GWP. After adjustment to reflect recent measurements of methane emissions from natural gas infrastructure, United States net emissions remain nearly as high as their 2005 level.

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