davidho

davidho, 9 months ago to random

Even if CO₂ emissions decreased annually as much as during the pandemic lockdown, we wouldn't achieve our climate targets.

While individuals made huge sacrifices, the system remained. This shows that individual action will not solve climate change. We need the system to change.

davidho, 10 months ago (edited 6 months ago) to random

Behold my favorite #traffic calming device.

davidho, 7 months ago to random

What is common knowledge in your field but shocks outsiders?

More than half the CO₂ emissions of the industrial age have been dumped into the atmosphere since 1990.

davidho, 1 month ago to random

I’m a bad person

davidho, 7 months ago to random

At some point, we should ask how this enhances our lives.

davidho, 9 months ago to random

It's not fashionable to talk about consuming less as a climate solution because our economy is based on selling us crap that no one needs.

davidho, 9 months ago to random

Back in 1985, Carl Sagan told Congress that continuing to burn fossil fuels will increase global temperature, cause climate change, melt glaciers and ice sheets, and cause sea level rise.

His solution: Fewer government subsidies for fossil fuels and use of renewable energy.

video/mp4

davidho, 7 months ago to random

Why is there the expectation that f**king up the planet and saving it should both be profitable?

davidho, 1 year ago (edited 8 months ago) to random

It's hard for people to visualize removing tons or billions of tons of carbon dioxide (CO₂). I propose we talk about CO₂ removal (#CDR) like a time machine (e.g., this machine will take us back 5 minutes). For example:

Q: How far back in time does planting 100 million trees take us?

A: If one mature tree takes up an average of 25 kg of CO₂ per year, then 100 million trees will take up 2.5 MtCO₂. That's a time machine that takes us back 33 minutes and 6 seconds in a year. It's not a lot.

davidho, 2 months ago to random

Instead of fixing the gun problem, we have active shooter drills.

Instead of fixing infrastructure and car bloat, we have this 👇.

davidho, 1 month ago to random

The best-selling vehicle in France vs. the US.

davidho, 9 months ago to random

Climate activists disrupting flights at Frankfurt airport.

Oh wait, I’m told it’s a flood.

video/mp4

davidho, 8 months ago (edited 8 months ago) to random

If you have a meeting scheduled at 8:00 and someone writes: "Can we shift the meeting forward 30 min?" Do they want to meet at 7:30 or 8:30?

davidho, 8 months ago to random

Anything that makes a city a worse place to drive makes it a better place to live… 👀

https://xkcd.com/2832/

davidho, 9 months ago (edited 9 months ago) to random

Is everyone on the same page that old-growth forests sequester much more carbon than younger forests?

So it makes more sense to focus on not cutting down trees rather than planting new trees since it takes two to three decades for trees to reach full maturity, if they survive.

davidho, 2 months ago to random

Half of the world’s population depends on synthetic fertilizers for food.

We need to phase out fossil fuels but to doubt the importance of Haber-Bosch to humanity is unserious.

davidho, 9 months ago to random

Do y’all think about governments putting more than $1 trillion into fossil fuel consumption subsidies last year?

davidho, 7 months ago to random

This bonkers story about how a former DJ sold thousands of airplane engine components with bogus documentation that are installed in airplanes worldwide might be a good inspiration to fly less. 😬

https://www.bloomberg.com/news/features/2023-10-11/fake-parts-found-on-boeing-airbus-jets-plague-airlines

davidho, 8 months ago to random

“I know how this information looks—when taken out of context, it seems bad,” Exxon CEO Darren Woods said in response to the Wall Street Journal’s inquiry about the documents that show Exxon executives strategized over how to diminish concerns about warming temperatures, and they sought to muddle scientific findings that might hurt its oil-and-gas business.

Lol. In what context does this look good?

https://www.wsj.com/business/energy-oil/exxon-climate-change-documents-e2e9e6af

davidho, 7 months ago to random

Mutual assured destruction is clearly the motivation for car buying these days.

Ultimately, we're all going to have cars that fire missiles.

davidho, 7 months ago to random

It’s unfortunate (in a sense) that while temperatures were extreme this year (warmest in the instrumental record in many places), most of the US and Europe were spared so many will feel that this level of warming is no big deal.

Image from Robert Rohde

davidho, 8 months ago to random

We were asked to cancel our classes today and not go to campus because Stanford is playing University of Hawaiʻi in football and they needed the parking. 🤨

This is another reason for transit and bike infrastructure.

davidho, 6 months ago to random

Breaking: Natural intelligence solves problems in a similar way to artificial intelligence made to mimic natural intelligence. 🙄

davidho, 3 months ago to random

Pro tip: Bring your phone with you on a hike. That way, if you get lost, you can post on Mastodon and someone will invariably come up behind you and tell you how to write your alt text.

davidho, 4 months ago to random

If capitalism is so perfect, why do we have to give so many subsidies to corporations?