David Ho
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davidho.bsky.social
David Ho
@davidho.bsky.social
110K followers 2.8K following 12K 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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davidho.bsky.social
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
davidho.bsky.social
Ok, sometimes Facebook is funny.
The image is a screenshot of a Facebook post from Pete Buttigieg's account, where he writes: "Just getting dinner onto the table for the kiddos, will deal with this later." Below his post is an embedded tweet from "The Bulwark" account quoting Donald Trump. The quote reads: "We had a guy named Buttigieg. Boot-edge-edge they say is the best way. Just say two 'edges' like off the edge of a cliff — which is where they were taking us, by the way." In the background of the image, Donald Trump is pictured while seated at a desk. He is visibly animated and speaking, with his mouth open as though in mid-sentence. Behind him, multiple individuals, including people in uniform, are standing. There's a United States flag and other decorations in the room.
November 11, 2025 at 10:04 AM
davidho.bsky.social
There goes the Nobel Prize.
theguardian.com The Guardian @theguardian.com · 10h
Trump-brokered peace deal between Thailand and Cambodia breaks down after border landmine blast
Trump-brokered peace deal between Thailand and Cambodia breaks down after border landmine blast
Thailand’s military chief suspended the peace agreement with neighbouring Cambodia after a landmine blast injured two Thai soldiers near the border Thailand has suspended the implementation of a peace agreement with neighbouring Cambodia after a landmine blast injured two Thai soldiers near the border, escalating tensions between the neighbours who clashed in July. US president Donald Trump helped broker a peace deal between the two southeast Asian nations, after a five-day border conflict. Both sides signed an expanded truce in Malaysia in October but on Monday Thailand’s armed forces chief said that had been halted. Continue reading...
www.theguardian.com
November 11, 2025 at 12:26 AM
davidho.bsky.social
I guess someone thought it was significant that the guy was driving a Tesla.

velo.outsideonline.com/news/tesla-d...
An image showing the Golden Gate Bridge in the background with a silhouette of a cyclist in the foreground. Text at the bottom states: "Tesla Driver Stabs Cyclist Near Golden Gate Bridge."
November 11, 2025 at 12:20 AM
Reposted by David Ho
seanokane.bsky.social
NEW: Rad Power Bikes has told employees it will go out of business in January without new funding.

The company said in a staff email that it had a "very promising" option to stay alive, but whatever that was, it fell apart.

Story with @kirstenkorosec.bsky.social

techcrunch.com/2025/11/10/r...
Rad Power Bikes faces shutdown in January without new funding | TechCrunch
The company is "still fighting to find ways to continue" according to an email viewed by TechCrunch.
techcrunch.com
November 10, 2025 at 9:22 PM
Reposted by David Ho
elizkolbert.bsky.social
Inaction is contagious. My take as we head into COP30:
Governments and Billionaires Retreat Ahead of COP30 Climate Talks
Worldwide, every other week seems to bring a new climate-related crisis. Increasingly, the response has seemed to be a dulled acceptance.
www.newyorker.com
November 10, 2025 at 9:16 PM
davidho.bsky.social
I took an entire semester of physics in college called Electricity and Magnetism.
atrupar.com Aaron Rupar @atrupar.com · 13h
Trump: "Nobody knows what magnets are."
November 10, 2025 at 9:33 PM
davidho.bsky.social
Why are the Democrats so bad at this?
a cartoon girl in a blue dress is kneeling in a field holding a bag
Alt: lucy yanking the football away at the last minute dot gif
media.tenor.com
November 10, 2025 at 6:29 PM
davidho.bsky.social
Good
Jailed climate activist wins appeal against deportation from UK
Marcus Decker was served with deportation order while in prison for unveiling Just Stop Oil banner over Dartford Crossing
www.theguardian.com
November 10, 2025 at 5:50 PM
Reposted by David Ho
carlzimmer.com
An engineer wanted to make a quiet high-speed train. “The question then occurred to me — is there some living thing that manages sudden changes in air resistance as a part of daily life?” The answer: the kingfisher. See my story today for more tales of bioinspiration. Gift link: nyti.ms/4otNQyl
An illustration comparing a kingfisher beak to a high-speed train
November 10, 2025 at 5:10 PM
Reposted by David Ho
shannonosaka.bsky.social
The Post (me and @kcrowebasspro.bsky.social) analyzed the social media posts and appearances of prominent politicians across the country.

We found that no one is talking about climate change anymore. In 2025, mentions are 60% lower than in 2024.

www.washingtonpost.com/climate-envi...
This bar chart shows a decrease in mentions of 'climate' since a peak in August 2022, when Congress passed the Inflation Reduction Act.
November 10, 2025 at 4:24 PM
Reposted by David Ho
petebuttigieg.bsky.social
The President wouldn't last five minutes as an air traffic controller, and after everything they've been through - and the way this administration has treated them from Day One - he has no business shitting on them now.
November 10, 2025 at 4:53 PM
davidho.bsky.social
Trump has lost his noodles.
Italian Pasta Is Poised to Disappear From American Grocery Shelves
The Trump administration is set to impose duties of 107% on Italian pasta imports, among most punitive of the tariffs it has levied.
www.wsj.com
November 10, 2025 at 4:43 PM
davidho.bsky.social
This seems significant.

"U.S. GDP growth in the first half of 2025 was almost entirely driven by investment in data centers and information processing technology, according to Harvard economist Jason Furman."
Without data centers, GDP growth was 0.1% in the first half of 2025, Harvard economist says | Fortune
Is a U.S. without data centers a country without GDP growth?
fortune.com
November 10, 2025 at 3:26 PM
Reposted by David Ho
jburnmurdoch.ft.com
Quick thread on the BBC and the political and societal significance of recent developments:

One of the main reasons the UK has historically been so much less polarised than the US, is that Britain has a shared source of information, consumed and trusted by most people regardless of their politics.
November 10, 2025 at 1:43 PM
davidho.bsky.social
The rise in the number of objects in space, especially in low Earth orbit, over the past decade is astounding.

www.academie-sciences.fr/grandes-cons...
Graph titled *“Évolution dans le temps de la population orbitale”* showing the evolution of the number of catalogued orbital objects (satellites and debris) as a function of altitude (200–2000 km) for the years 2000 (blue line), 2011 (red line), and 2023 (green line). The y-axis shows the number of catalogued objects, and the x-axis shows altitude in kilometers (in 5 km bins). The 2023 curve is significantly higher overall, with several peaks labeled: * Around 350–600 km: a sharp rise marked *“Constellation Starlink”* and *“Attention front dense !”* indicating a dense zone of satellites. * Around 400 km: a peak labeled *“Stations CSS, ISS”*. * Around 850 km: a smaller peak labeled *“Zone d’augmentation spontanée par collisions”* (spontaneous collision growth zone). * Around 980 km: a labeled *“Zone de stabilité > 1 000 ans”* (stable orbit zone). * Around 1200 km: labeled *“OneWeb”*. * Around 1400 km: labeled *“Globalstar”*. Overall, the 2023 data (green) show a dramatic increase in low Earth orbit (LEO) satellite density compared with 2011 and 2000, especially between 500 and 600 km altitude. Caption: “Figure 3. Évolution du nombre des satellites en fonction de l’altitude entre 200 et 2000 km (CNES).”
November 10, 2025 at 3:07 PM
davidho.bsky.social
Not satisfied with destroying the media only in the US, Trump now turns his attention abroad.
financialtimes.com Financial Times @financialtimes.com · 20h
Donald Trump has threatened to sue the BBC over the edit of a speech he made as his supporters stormed the Capitol building in Washington, deepening a crisis at the broadcaster that has led to the resignation of two top executives. on.ft.com/4qLuoyF
November 10, 2025 at 2:52 PM
davidho.bsky.social
The Trump regime is looking for new ways to kill people.
Trump officials set to approve ‘forever chemical’ as pesticide ingredient
Critics say that fifth Pfas Trump’s EPA has proposed for approval this year would put food and water supply at risk
www.theguardian.com
November 10, 2025 at 1:15 PM
davidho.bsky.social
Forest and other biomass techniques might be the most cost-effective methods of CO₂ removal (CDR), but they're certainly not the most effective. But if you're only interested in greenwashing, why waste your money on real CDR?

www.statista.com/chart/35418/...
This infographic titled "Forests Remain the Most Cost-Effective Way to Capture Carbon" compares the weighted average price per carbon credit for various carbon removal methods in 2023, measured in dollars per ton of CO₂ equivalent ($/tCO₂e). The methods listed and their respective prices are: Forest management: $12/tCO₂e (the most cost-effective method). Reforestation or afforestation: $16/tCO₂e. Biomass burial: $111/tCO₂e. Biochar: $131/tCO₂e. Direct air carbon capture and storage: $715/tCO₂e. Direct ocean carbon capture and storage: $1,402/tCO₂e (the most expensive method). The infographic also features a graph showing the historical and projected growth in global carbon capture capacity from 2011 to 2035. In 2011, the capacity was 19 Mt/year, which is expected to triple to 52 Mt/year by 2023, and increase significantly to 1,180 Mt/year by 2035. Sources for the data are listed as "The State of Carbon Dioxide Removal 2024 (IIASA)" and "IDTechEx."
November 10, 2025 at 12:15 PM
davidho.bsky.social
I wanted to pet the dog
November 10, 2025 at 12:06 PM
Reposted by David Ho
thomasnhale.bsky.social
The dominant narrative is that the world is rolling back climate policy. But what does the data say?

The latest Oxford Climate Policy Monitor Annual Review from the Oxford Climate Policy Hub tells three key stories.
bsg.ox.ac.uk/news/climate...
November 10, 2025 at 11:17 AM
davidho.bsky.social
The fuck? Also, many of these people have been charged at the state level (e.g., Georgia, Wisconsin, Arizona) and Trump can't pardon them for state crimes.
November 10, 2025 at 11:23 AM
davidho.bsky.social
Marine CO₂ removal lacks standardized indicators to quantify carbon removed and environmental impacts. This absence of reliable metrics prevents verification, inhibits investment, and blocks entry into carbon trading systems.

iopscience.iop.org/article/10.1...
a schematic diagram showing various processes and related indicators for monitoring carbon removal in ocean systems, based on analyzed literature. The diagram divides the processes into three categories represented by different colors: Blue Carbon (green): Focuses on processes related to carbon sequestration and the role of marine ecosystems in capturing and storing carbon. Artificial Upwelling (yellow): Depicts processes that involve artificial interventions in marine environments to increase carbon capture. Ocean Alkalinity Enhancement (blue): Illustrates methods that increase ocean alkalinity, which can help enhance carbon removal. The processes depicted in the diagram include: Carbon Sequestration Potential: This refers to the ability of oceans to capture and store carbon, with an indicator for monitoring this potential. Mineral Dissolution and Seawater Alkalinity Change: These processes are associated with changes in seawater chemistry, enhancing carbon sequestration through increased alkalinity. GHG Emissions: This represents the release of greenhouse gases, which can be measured to monitor the net carbon dynamics in the system. Carbon Removal Rates and Respiration: Shows how carbon is removed from the atmosphere and the role of respiration in this process, measured through carbon flux indicators. Primary Production and Water Masses Detection: This includes the detection of primary production (e.g., photosynthesis) in marine systems that leads to organic carbon formation. Sinking, Remineralization, and Burial: These processes involve the movement of carbon from the surface to deeper ocean layers, with some carbon remineralized and some buried in sediments. 🧪🌊
November 10, 2025 at 11:18 AM
davidho.bsky.social
In Paris, you can get a monthly public transport pass for the city and its surroundings (Île-de-France) for less than 100€/month, and your employer has to reimburse at least half of it.

www.iledefrance-mobilites.fr/en/titres-et...
a detailed map of the Paris Metro and RER (Regional Express Network) system. The map is intricately designed with color-coded lines representing the different metro and suburban train routes, each labeled with their respective line numbers or names. The map is centered on Paris with the various lines radiating outwards, connecting numerous stations within the city and surrounding regions. It includes a legend for the metro, RER, and other transport systems such as tram lines. The map also indicates important landmarks, transit zones, and connections to other modes of transportation, such as buses and the Orlyval light rail to the Orly Airport. Each line has a unique color, making it easy to distinguish between routes.
November 10, 2025 at 10:55 AM
davidho.bsky.social
The fact that rich people are buying up the media and politicians, and using up the remaining carbon budget is very bad for everyone.
November 10, 2025 at 9:37 AM
davidho.bsky.social
Inevitable, but unfortunately, the barrier to working in China is more than visa.
China rolls out its version of the H-1B visa to attract foreign tech workers
It coincides with uncertainties over the U.S.'s H-1B program under tightened immigrations policies implemented by President Donald Trump.
apnews.com
November 10, 2025 at 9:06 AM