Opinion
Yedvab: Stardust silica particles can offset 50 years of global warming
“We believe that for, I would say, to provide cooling, which is comparable to the heating of the last 50 years, our simpler particle, the one which is composed of amorphous silica by itself is enough, but if you need to go higher, the second more complex partic…”
Assertion Contradicted
Yedvab: Background stratospheric levels make small-scale sulfate testing impossible
“One of the problems with sulfates, apart from what we've been discussing, is the fact that you cannot do testing at small scale of sulfates. And the reason for this, since this is something sometimes people overlook, is the very high background that you have c…”
Assertion Open · timeframe Jul 2029
Yedvab: Stardust lab tests show its particle is highly chemically inert
“Lab tests that we've done show that our particle is, I'd say, at a very high level of inertness, but definitely better than any other alternative that it was provided so far.”
Assertion Open · timeframe Jul 2029
Yedvab: Stardust developed tagging technology to track particle batches globally
“We have developed a unique tagging technology which enables us to track in real time each batch of particles as they move across the globe.”
Assertion Not checkable as stated
Yedvab: 0.5 degrees of cooling costs $10 billion using Stardust particles
“So in, in terms of giving orders of magnitude or estimates, and we have a very detailed breakdown for every million tons of particles that will be Dispersed, the cost will be roughly ten billion dollars, and you'll get half a degree of cooling.”
Assertion Not checkable as stated
Yedvab: Halting global warming would cost $20 billion annually using Stardust
“Essentially at current level to stop war, to stabilize temperature, to stop warming at the current level, and again, the level is changing all the time, but essentially you'll need Well, let's say you'd say two million tons of our particles, just to give you- …”
Assertion Supported
Yedvab: Stardust particles match sulfate cooling effectiveness within tens of percent
“Our article, to be very, very straightforward, is not much better than sulfate with respect to the effectiveness and not much worse than sulfate.
So up to, I'd say,
A few tens of percents, which is not a, it's kind of similar.”
Opinion
Yedvab: Global solar geoengineering requires only five to seven injection locations
“You'd probably like a few in the, a northern hemisphere, a few in the southern hemisphere. I would say two or three on each hemisphere, and maybe one around the equator. Should be enough.”
Disclosure
Yedvab: Stardust will only operate under strict multilateral government regulation
“We would definitely not participate in any endeavor that won't be conducted under, I would say, Clear and strict regulation and adequate governance by governments.”
Insight
Yedvab: Safe geoengineering alternatives reduce the risk of rogue deployments
“I believe that having a safe option essentially lowers the risk That people will go the wrong way because there is an alternative. Or to say it otherwise, if we didn't have options, I would say that the likelihood that someone would go the wrong way would be m…”
Insight
Yedvab: Having no geoengineering options is worse than moral hazard risk
“I would argue that, you know, Having no option is not a good balance for this. You need to have options. You want to make sure that you are not stuck in a position that in 10 years from now, people are saying, why no one worked on, on giving us option?”
Assertion Supported
Yedvab: Reflecting under 1% of sunlight stabilizes global temperatures
“Less than one percent is enough to essentially stabilize temperature, and you can even take temperature down a little bit.”
