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David Ho

@davidho.bsky.social

110K followers 2.7K following 11K posts

Climate scientist; ocean carbon cycle and climate solutions. Professor, University of Hawaiʻi at Mānoa; Visiting Faculty, Arizona State University. https://linktr.ee/david_ho

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David Ho @davidho.bsky.social · Oct 29

In recognition of us doing fuck all to reduce emissions, let me remind y'all that carbon dioxide removal (CDR) is useless unless we decarbonize drastically.

rdcu.be/dbFbB

Carbon dioxide removal is not a current climate solution — we need to change the narrative

Drastically reduce emissions first, or carbon dioxide removal will be next to useless.

www.nature.com

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Reposted by David Ho

Maxine Joselow @maxinejoselow.bsky.social · 11h

Before catastrophic floods swept through the Alaska Native village of Kipnuk on Sunday, the EPA canceled a $20 million grant intended to protect the community from extreme flooding. www.nytimes.com/2025/10/14/c...

Before Alaska Flooding, E.P.A. Canceled $20 Million Flood Protection Grant

www.nytimes.com

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David Ho @davidho.bsky.social · 12h

😑

Trump posthumously awards Charlie Kirk the Presidential Medal of Freedom

President granted the US’s highest civilian award to the far-right commentator who was assassinated in September

www.theguardian.com

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David Ho @davidho.bsky.social · 12h

Matcha sucks

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David Ho @davidho.bsky.social · 16h

I’m sorry, I can only hang out with 150 of you.

Our Brains Evolved to Socialize—but Max Out at About 150 Friends

The size of our social networks is limited even in the age of social media.

www.wsj.com

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Reposted by David Ho

Daniel Wolfe @sadbumblebee.buzz · 16h

In June, the @washingtonpost.com sent me and @byaliceli.bsky.social to witness cultural burns in California. We learned how they encourage beneficial vegetation, reduce wildfire risk, and provide traditional food and craft sources for tribes in the Klamath region.

🎁: wapo.st/3J7BQTL

How indigenous practices can help protect forests

The Post followed cultural burning practices, an Indigenous tradition now permitted under California law and used to help protect forests from wildfires.

wapo.st

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David Ho @davidho.bsky.social · 18h

Lol

Supreme Court rejects Alex Jones' appeal of $1.4 billion defamation judgment in Sandy Hook shooting

The Supreme Court has rejected an appeal from conspiracy theorist Alex Jones and left in place the $1.4 billion judgment against him over his description of the 2012 Sandy Hook Elementary School shoot...

apnews.com

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David Ho @davidho.bsky.social · 18h

Whales are woke.

Republicans try to weaken 50-year-old law protecting whales, seals and polar bears

One of the U.S.’s longest standing pieces of environmental legislation, credited with helping save rare whales from extinction, is the subject of an effort for cutbacks from Republican lawmakers who n...

abcnews.go.com

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David Ho @davidho.bsky.social · 18h

Your free version of America has expired.

The Beacon of Democracy Goes Dark

For nearly 250 years, America promoted freedom and equality abroad, even when it failed to live up to those ideals itself. Not anymore.

www.theatlantic.com

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Reposted by David Ho

Ian James @ianjames.bsky.social · 19h

Gov. Newsom vetoed a bill that would have tracked data centers’ growing water footprint. He says California is “well positioned” to support the AI-driven data center boom, and he is reluctant to impose “rigid reporting requirements.” www.latimes.com/environment/...

California cracks down on water theft but spares data centers from disclosing how much they use

Gov. Newsom vetoed a bill that would have required data centers to report their projected water use when applying for a business license.

www.latimes.com

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David Ho @davidho.bsky.social · 18h

🤨

Reposted by David Ho

CO₂RE – The Greenhouse Gas Removal Hub @co2rehub.bsky.social · 22h

🚨REMINDER: "Making space for 'place' in carbon removal: learning from the communities of St Ives Bay" is happening tomorrow at 12pm. All welcome! We hope to see you there! @drrobbellamy.bsky.social @a-laurie-waller.bsky.social @uomseed.bsky.social co2re.org/events/makin...

Making space for “place” in carbon removal: learning from the communities of St Ives Bay – GGR Insights series - CO₂RE - The Greenhouse Gas Removal Hub

This is the fourth in our series of online webinars, GGR Insights, presenting the latest research and debating what is needed to enable the sustainable scale-up of greenhouse gas removal (GGR) in the ...

co2re.org

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David Ho @davidho.bsky.social · 1d

Nobel Prize given for showing the importance of investing in science for innovation and long-term economic growth. Basically the opposite of what the US is doing. 😭

Nature @nature.com · 1d

Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.

go.nature.com/4hj9NNV

Economics Nobel prize won by researchers who showed how science boosts growth

Joel Mokyr, Philippe Aghion and Pewter Howitt share economics prize for work that underlines the importance of investing in research and development.

go.nature.com

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Reposted by David Ho

Reuters @reuters.com · 1d

NASA's Jet Propulsion Laboratory to lay off about 550 workers reut.rs/4302N2L

NASA's Jet Propulsion Laboratory to lay off about 550 workers

NASA's Jet Propulsion Laboratory said on Monday it will cut nearly 550 jobs as part of a restructuring, not related to the current U.S. government shutdown.

reut.rs

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David Ho @davidho.bsky.social · 1d

Apple TV Max was right there

Apple TV+ Being Rebranded as Apple TV

Buried in its announcement about "F1: The Movie" making its streaming debut on December 12, Apple has also announced that Apple TV+ is being...

www.macrumors.com

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David Ho @davidho.bsky.social · 1d

Microplastics are released from plastic when exposed to heat, including leaching from tea bags into hot tea and plastic containers releasing nanoplastics when microwaved. While health effects are still unclear, minimizing heating plastic is a simple way to reduce exposure.

Microplastics are everywhere. You can do one simple thing to avoid them.

The biggest sources of microplastics have one thing in common: Heat.

wapo.st

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David Ho @davidho.bsky.social · 1d

Wait, y'all are getting paid? Where do I collect?

Aaron Rupar @atrupar.com · 1d

Sean Duffy: "The No Kings protest, Maria, really frustrating. This is part of antifa, paid protesters. It begs the question who's funding it."

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David Ho @davidho.bsky.social · 1d

Ok, since many people are obviously not reading the article, here's a pertinent figure from it showing the top actions to reduce emissions.

A horizontal bar chart titled “19 climate-friendly choices, ranked” shows actions individuals can take to reduce their carbon footprint, ordered from most to least impactful. The x-axis represents projected impact in tons of CO₂ equivalent per capita per year (tCO₂e/cap/yr), ranging from 0 to about 2.5. Each action is color-coded by sector: transportation (blue), energy (orange), and food (green).

Go car-free – highest impact (blue bar extending to about 2.5 tCO₂e).

Fly less (blue, about 1.5).

Shift to renewable home energy (orange, about 1.4).

Switch to EV or hybrid car (blue, about 1.2).

Go vegan (green, about 1.0).

Walk, bike, or take transit more (blue).

Make energy-efficient renovations (orange).

Use clean cooking equipment (orange).

Go vegetarian (green).

Shift driving habits (e.g., carpooling) (blue).

Increase telecommuting (blue).

Shift to regional/seasonal diet (green).

Move to energy-efficient home (orange).

Decrease food waste (green).

Eat less meat (green).

Use less energy at home (orange).

Reduce packaged food, dining out (green).

Use energy-efficient appliances (orange).

Compost – least impact (green, under 0.1).

A note clarifies that these are meta-analytic estimates of greenhouse gas reduction potentials, drawn from 659 estimates across 47 academic journal articles. The average person emits 6.28 tonnes of CO₂e per year, though this varies widely by income and country. Wealthier populations may emit up to 110 tonnes per year, while lower-income populations may emit as little as 1.6 tonnes.

Source: WRI, based on data from Ivanova et al., 2020.

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Reposted by David Ho

Sarah Perkins-Kirkpatrick @sarahinscience.bsky.social · 1d

For so long, fossil fuel projects have said their contribution to climate change is "negligible".
Turns out that's wrong.
Our research in NPJ Climate Action proves it.
Every tonne of CO2 matters.
@21stcenturyweather.bsky.social
@minderoo.bsky.social
#climatechange
www.nature.com/articles/s44...

Quantifying the regional to global climate impacts of individual fossil fuel projects to inform decision-making - npj Climate Action

npj Climate Action - Quantifying the regional to global climate impacts of individual fossil fuel projects to inform decision-making

www.nature.com

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David Ho @davidho.bsky.social · 1d

“Living car-free is the most impactful behavior by far in terms of reducing emissions.”

WRI Climate @wriclimate.bsky.social · 1d

🚲🥗🚗 Small choices matter, but big change happens when systems support them.

WRI Climate ranked 19 climate-friendly behaviors to show which ones cut the most emissions and why policies & businesses must make them accessible.

See the list 👉 bit.ly/4q0pWvC

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Reposted by David Ho

Damian Carrington @dpcarrington.bsky.social · 1d

New Zealand accused of ‘full-blown climate denial’ over cuts to #methane reduction targets

- Farmers praised the move, but scientists and opposition parties criticised it as ‘weak’

- NZ has 5 million cows and 23 million sheep

#climatecrisis
www.theguardian.com/world/2025/o...

New Zealand accused of ‘full-blown climate denial’ over cuts to methane reduction targets

Farmers praised the move, but scientists and opposition parties criticised it as ‘weak’ and ‘unambitious’

www.theguardian.com

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Reposted by David Ho

Dr. Kat Napaaqtuk❄️ @napaaqtuk.bsky.social · 1d

Western Alaska was hit hard by the recent storms. Houses floated away in Kipnuk, houses flipped over, people lost everything from the flooding that came with the storms. Please donate if you can. This group has a long history of supporting AK communities.

alaskacf.fcsuite.com/erp/donate/c...

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David Ho @davidho.bsky.social · 2d

Does the plan involve relocating Israel to northern Baja California, given its similar shape and latitude?

AFP News Agency @en.afp.com · 2d

🔴 LIVE: US President Donald Trump addresses Knesset

Trump arrives at the Israeli parliament where he is to address lawmakers on his plans for Middle East peace.

➡️ www.youtube.com/watch?v=l4b4...

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David Ho @davidho.bsky.social · 2d

A reminder.

Humanity has never removed an atmospheric pollutant at a global, continental or, even, regional scale — we have only ever shut down the source and let nature do the clearing up. This is the case for chlorofluorocarbons and stratospheric ozone destruction, for sulfur dioxide and acid rain, and for sulfur and nitrogen oxides and photochemical smog. We must be prepared for CDR to be a failure, leaving us to rely on the environment to stabilize atmospheric CO₂ over thousands of years. This is another argument for rapid decarbonization.

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Reposted by David Ho

Shannon Mattern @shannonmattern.bsky.social · 2d

There's "no easy throughline to draw from the lab to our everyday lives. Often that line is a culmination of expertise that outweighs the contributions of one or a few scientists; it is an idea here, a breakthrough there + many failed experiments in between, sometimes over the course of decades"...

Nobel Prizes This Year Offer Three Cheers for Slow Science

www.nytimes.com

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