Mark Chen

Startup founder, conservative conservationist, AI practitioner, eternal optimist, dad of two, husband of one

[Mark Chen @chenmark]

I love my Clawbot, but can everybody stop humblebragging about their setups? We get it, your Clawbot can run faster, jump higher, and do more scary things than everybody else's. I'm still not going to sign mine up for club soccer.

[Mark Chen @chenmark]

@NYCMayor I ran the numbers on the climate impact. Using NYCHA data, the cost to reduce GHG emissions was $140-190/tonne, or about 10x of what a portfolio of high-integrity carbon credits would cost.
https://t.co/a5x4PdbqPR

[Mark Chen @chenmark]

"With more than three years between SLS launches, we fully anticipated encountering challenges."
This is exactly why @SpaceX is winning the battle for space. Volume -> Learning -> Improvements -> Reliability -> More Volume

[NASA Administrator Jared Isaacman @NASAAdmin]

With the conclusion of the wet dress rehearsal today, we are moving off the February launch window and targeting March for the earliest possible launch of Artemis II.

With more than three years between SLS launches, we fully anticipated encountering challenges. That is precisely why we conduct a wet dress rehearsal. These tests are designed to surface issues before flight and set up launch day with the highest probability of success.

During the test, teams worked through a liquid hydrogen leak at a core stage interface during tanking, which required pauses to warm hardware and adjust propellant flow. All core stage and interim cryogenic propulsion stage tanks were successfully filled, and teams conducted a terminal countdown to about T-5 minutes before the ground launch sequencer halted operations due to an increased leak rate. Additional factors included extended Orion closeout work, intermittent ground audio dropouts, and cold-weather impacts to some cameras, along with the successful demonstration of updated Orion closeout purge procedures to support safe crew operations.

As always, safety remains our top priority, for our astronauts, our workforce, our systems, and the public. As noted above, we will only launch when we believe we are as ready to undertake this historic mission.

This is just the beginning. It marks the start of an Artemis program that will evolve to support repeated and affordable missions to the Moon, in line with President Trump’s national space policy. Getting this mission right means returning to the Moon to stay and a future to Artemis 100 and beyond.

I want to thank the talented workforce at NASA, along with our industry and international partners, who are working tirelessly on this effort. The team will fully review the data, troubleshoot each issue encountered during WDR, make the necessary repairs, and return to testing. We expect to conduct an additional wet dress rehearsal and then target the March window.

We will continue to keep the public and the media informed as readiness progresses.

[Mark Chen @chenmark]

@AlexanderTw33ts Great idea. Poor execution, e.g., search doesn't work. Also, if you want to automate labor marketplaces you're going to need automated negotiation, price certainty, payment, escrow, etc. I'll wait a week

[Mark Chen @chenmark]

@SawyerMerritt Is this the modern equivalent of Google buying Motorola?

[Mark Chen @chenmark]

@guo_dini Add “TedX Speaker”

[Mark Chen @chenmark]

@mfbloodgood @useCNaught Thanks Matt! We’re excited for the next step in the journey!

[Mark Chen @chenmark]

@bdurette @Waymo Uber always seemed better. Newer cars and nicer drivers.

[Mark Chen @chenmark]

Last two Ubers ordered ended up being taxis. What is going on? All the more reason to ride @Waymo whenever possible.

[Mark Chen @chenmark]

Just listened to the collab between my two favorite podcasts, @Radiolab and @planetmoney. Greatly disappointed to hear @latifnasser share his "existential dread" about perpetual economic growth. When will radicals stop seeing growth as bad and innovation as a natural outcome of free markets and constraints? https://t.co/1sQDptpjZv

[Mark Chen @chenmark]

@michelletandler @DanielLurie So when are you going to move back?

[Mark Chen @chenmark]

Amazon's new carbon credit service is intended to make it easier for suppliers to hit net zero. But will buyers trust it? 🌱 #CorporateSustainability"
https://t.co/CZt4M995G5

[Mark Chen @chenmark]

92% of all new electricity generation last year was renewable. Clearly more work to be done as there are still lots of existing coal and gas plants. But we are on the path to carbon-free electricity!
https://t.co/YieNi6YxnK

[Mark Chen @chenmark]

This is important stuff. My own company only has Scope 3 emissions. Zero Scope 1 or 2 emissions. So having flexibility on how we reduce emissions of our supply chain gives us something to focus and work on.

[Trellis @trellisgroup_]

Proposed new guidelines from the Science Based Targets Initiative (SBTi) include a significant overhaul of the system for setting and hitting Scope 3 emissions targets, one of the thorniest challenges faced by sustainability teams.

Why this matters ⬇️ https://t.co/LSmyEhnrpl

[Mark Chen @chenmark]

More fantastic analysis from Hannah Ritchie that summarizes the UK's carbon projections. Most of the reduction in emissions through 2050 come from renewable energy, electric vehicles, and heat pumps. We don't need to go vegan and use cloth diapers to have a meaningful impact on climate.
https://t.co/lnfPIXTbad

[Mark Chen @chenmark]

New grid technologies are transforming the energy landscape by cutting costs, boosting renewable use, and enhancing reliability. When can we start building again? These are the innovations that will lead to greater sustainability #RenewableEnergy

https://t.co/EKfs07yZyK

[Mark Chen @chenmark]

@NatBullard @EIAgov Next up: natural gas.

[Mark Chen @chenmark]

Why is every website in the world asking me to set up 2FA?

[Mark Chen @chenmark]

The four types of #carboncredits buyers as Hogwarts houses:

🐍 Slytherin
Ambitious and resourceful.
Buy whatever is cheap. The lower price let's you buy more.

🦡 Hufflepuff
Loyal, fair and inclusive.
Purchases projects that achieve SDGs and has strong co-benefits.

🦁 Gryffindor
Brave and courageous, occasionally self-righteous.
Focused on carbon removal credits. Often frowns on carbon avoidance projects.

🦅 Ravenclaw
Logical and diligent.
Views each project on its own merits. Understands risks and benefits.

Do your homework. Be a Ravenclaw.

[Mark Chen @chenmark]

How much longer are folks going to wait as this sclerotic organization hems and haws about what to do about corporate GHG emissions? Are companies going to start looking at the ISO Net Zero standard?
https://t.co/fct2ZKmjKd