『Let's Know Things』のカバーアート

Let's Know Things

Let's Know Things

著者： Colin Wright
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 A calm, non-shouty, non-polemical, weekly news analysis podcast for folks of all stripes and leanings who want to know more about what's happening in the world around them. Hosted by analytic journalist Colin Wright since 2016.

letsknowthings.substack.comColin Wright 政治・政府
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  • Climate Risk

    Climate Risk
    2025/12/02
    This week we talk about floods, wildfires, and reinsurance companies.We also discuss the COP meetings, government capture, and air pollution.Recommended Book: If Anyone Builds It, Everyone Dies by Eliezer Yudkowsky and Nate Soares TranscriptThe urban area that contains India’s capital city, New Delhi, called the National Capital Territory of Delhi, has a population of around 34.7 million people. That makes it the most populous city in the country, and one of the most populous cities in the world.Despite the many leaps India has made over the past few decades, in terms of economic growth and overall quality of life for residents, New Delhi continues to have absolutely abysmal air quality—experts at India’s top research hospital have called New Delhi’s air “severe and life-threatening,” and the level of toxic pollutants in the air, from cars and factories and from the crop-waste burning conducted by nearby farmers, can reach 20-times the recommended level for safe breathing.In mid-November 2025, the problem became so bad that the government told half its workers to work from home, because of the dangers represented by the air, and in the hope that doing so would remove some of the cars on the road and, thus, some of the pollution being generated in the area.Trucks spraying mist, using what are called anti-smog guns, along busy roads and pedestrian centers help—the mist keeping some of the pollution from cars from billowing into the air and becoming part of the regional problem, rather than an ultra-localized one, and pushing the pollutants that would otherwise get into people’s lungs down to the ground—though the use of these mist-sprayers has been controversial, as there are accusations that they’re primarily deployed near air-quality monitoring stations, and that those in charge put them there to make it seem like the overall air-quality is lower than it is, manipulating the stats so that their failure to improve practical air-quality isn’t as evident.And in other regional news, just southeast across the Bay of Bengal, the Indonesian government, as of the day I’m recording this, is searching for the hundreds of people who are still missing following a period of unusually heavy rains. These rains have sparked floods and triggered mudslides that have blocked roads, damaged bridges, and forced the evacuation of entire villages. More than 300,000 people have been evacuated as of last weekend, and more rain is forecast for the coming days.The death toll of this round of heavy rainfall—the heaviest in the region in years—has already surpassed 440 people in Indonesia, with another 160 and 90 in Thailand and Vietnam, respectively, being reported by those countries’ governments, from the same weather system.In Thailand, more than two million people were displaced by flooding, and the government had to deploy military assets, including helicopters launched from an aircraft carrier, to help rescue people from the roofs of buildings across nine provinces.In neighboring Malaysia, tens of thousands of people were forced into shelters as the same storm system barreled through, and Sri Lanka was hit with a cyclone that left at least 193 dead and more than 200 missing, marking one of the country’s worst weather disasters in recent years.What I’d like to talk about today is the climatic moment we’re at, as weather patterns change and in many cases, amplify, and how these sorts of extreme disasters are also causing untold, less reported upon but perhaps even more vital, for future policy shifts, at least, economic impacts.—The UN Conference of the Parties, or COP meetings, are high-level climate change conferences that have typically been attended by representatives from most governments each year, and where these representatives angle for various climate-related rules and policies, while also bragging about individual nations’ climate-related accomplishments.In recent years, such policies have been less ambitious than in previous ones, in part because the initial surge of interest in preventing a 1.5 degrees C increase in average global temperatures is almost certainly no longer an option; climate models were somewhat accurate, but as with many things climate-related, seem to have actually been a little too optimistic—things got worse faster than anticipated, and now the general consensus is that we’ll continue to shoot past 1.5 degrees C over the baseline level semi-regularly, and within a few years or a decade, that’ll become our new normal.The ambition of the 2015 Paris Agreement is thus no longer an option. We don’t yet have a new, generally acceptable—by all those governments and their respective interests—rallying cry, and one of the world’s biggest emitters, the United States, is more or less absent at new climate-related meetings, except to periodically show up and lobby for lower renewables goals and an increase in subsidies for and policies that favor the ...
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    16 分
  • Thorium Reactors

    Thorium Reactors
    2025/11/25
    This week we talk about radioactive waste, neutrons, and burn while breeding cycles.We also discuss dry casks, radioactive decay, and uranium.Recommended Book: Breakneck by Dan WangTranscriptRadioactive waste, often called nuclear waste, typically falls into one of three categories: low-level waste that contains a small amount of radioactivity that will last a very short time—this is stuff like clothes or tools or rags that have been contaminated—intermediate-level waste, which has been contaminated enough that it requires shielding, and high-level waste, which is very radioactive material that creates a bunch of heat because of all the radioactive decay, so it requires both shield and cooling.Some types of radioactive waste, particularly spent fuel of the kind used in nuclear power plants, can be reprocessed, which means separating it into other types of useful products, including another type of mixed nuclear fuel that can be used in lieu of uranium, though generally not economically unless uranium supplies are low. About a third of all spent nuclear fuel has already been reprocessed in some way.About 4% of even the recyclable stuff, though, doesn’t have that kind of second-life purpose, and that, combined with the medium- and long-lived waste that is quite dangerous to have just sitting around, has to be stored somehow, shielded and maybe cooled, and in some cases for a very long time: some especially long-lived fission products have half-lives that stretch into the hundreds of thousands or millions of years, which means they will be radioactive deep into the future, many times longer than humans have existed as a species.According to the International Atomic Energy Agency, something like 490,000 metric tons of radioactive spent fuel is currently being stored, on a temporary basis, at hundreds of specialized sites around the world. The majority of this radioactive waste is stored in pools of spent fuel water, cooled in that water somewhere near the nuclear reactors where the waste originated. Other waste has been relocated into what’re called dry casks, which are big, barrel-like containers made of several layers of steel, concrete, and other materials, which surround a canister that holds the waste, and the canister is itself surrounded by inert gas. These casks hold and cool waste using natural air convection, so they don’t require any kind of external power or water sources, while other solutions, including storage in water, sometimes does—and often the fuel is initially stored in pools, and is then moved to casks for longer-term storage.Most of the radioactive waste produced today comes in the form of spend fuel from nuclear reactors, which are typically small ceramic pellets made of low-enriched uranium oxide. These pellets are stacked on top of each other and encased in metal, and that creates what’s called a fuel rod.In the US, alone, about 2,000 metric tons of spent nuclear fuel is created each year, which is just shy of half an olympic sized swimming pool in terms of volume, and in many countries, the non-reuseable stuff is eventually buried, near the surface for the low- to intermediate-level waste, and deeper for high-level waste—deeper, in this context, meaning something like 200-1000 m, which is about 650-3300 feet, beneath the surface.The goal of such burying is to prevent potential leakage that might impact life on the surface, while also taking advantage of the inherent stability and cooler nature of underground spaces which are chosen for their isolation, natural barriers, and water impermeability, and which are also often reinforced with human-made supports and security, blocking everything off and protecting the surrounding area so nothing will access these spaces far into the future, and so that they won’t be broken open by future glaciation or other large-scale impacts, either.What I’d like to talk about today is another potential use and way of dealing with this type of waste, and why a recent, related development in China is being heralded as such a big deal.—An experimental nuclear reactor was built in the Gobi Desert by the Chinese Academy of Sciences Shanghai Institute of Applied Physics, and back in 2023 the group achieved its first criticality, got started up, basically, and it has been generating heat through nuclear fission ever since.What that means is that the nuclear reactor did what a nuclear reactor is supposed to do. Most such reactors exist to generate heat, which then creates steam and spins turbines, which generates electricity.What’s special about this reactor, though, is that it is a thorium molten salt reactor, which means it uses thorium instead of uranium as a fuel source, and the thorium is processed into uranium as part of the energy-making process, because thorium only contains trace amounts of fissile material, which isn’t enough to get a power-generating, nuclear chain reaction going.This reactor was able to successfully ...
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    13 分
  • Extrajudicial Killing

    Extrajudicial Killing
    2025/11/18
    This week we talk about Venezuela, casus belli, and drug smuggling.We also discuss oil reserves, Maduro, and Machado.Recommended Book: Dungeon Crawler Carl by Matt DinnimanTranscriptVenezuela, which suffered all sorts of political and economic crises under former president Hugo Chávez, has suffered even more of the same, and on a more dramatic scale, under Chávez’s successor, Nicolás Maduro.Both Chávez and Maduro have ruled over autocratic regimes, turning ostensibly democratic Venezuelan governments into governments ruled by a single person, and those they like and empower and reward, over time removing anyone from power who might challenge them, and collapsing all checks and balances within the structure of their government.They still hold elections, then, but like in Russia, the voting is just for show, the outcome predetermined, and anyone who gets too popular and who isn’t favored by the existing regime is jailed or killed or otherwise neutralized; the votes are then adjusted when necessary to make it look like the regime is still popular, and anyone who challenges that seeming popularity is likewise taken care of.As a result of that state of affairs, an unpopular regime with absolute power running things into the ground over the course of two autocrats’ administrations, Venezuela has suffered immense hyperinflation, high levels of crime and widespread disease, ever-increasing mortality rates, and even starvation, as fundamentals like food periodically become scarce. This has led to a swell of emigration out of the country, which has, during the past decade, become the largest ever recorded refugee crisis in the Americas, those who leave mostly flooding into neighboring countries like Colombia, Peru, and Ecuador.As of 2025, it’s estimated that nearly 8 million people, more than 20% of Venezuela’s entire population as of 2017, has fled the country to get away from the government, its policies, its collapsed economy, and the cultural homogeny that has led to so much crime, conflict, and oppression of those not favored by the people in charge.This has also led to some Venezuelans trying to get into the US, which was part of the justification for a proposed invasion of the country, by the US government, under the first Trump administration in 2017.The idea was that this is a corrupt, weak government that also happens to possess the largest proven oil reserves in the world. Its production of oil has collapsed along with everything else, in part because the government is so ineffectual, and in part because of outside forces, like longstanding sanctions by the US, which makes selling and profiting from said oil on the global market difficult.Apparently, though, Trump also just liked the idea of invading Venezuela through US ally Colombia, saying—according to Trump’s National Security advisor at the time, John Bolton—that Venezuela is really part of the US, so it would be “cool” for the US to take it. Trump also later said, in 2023, that when he left office Venezuela was about to collapse, and that he would have taken it over if he had been reelected instead of losing to Joe Biden, and the US would have then kept all the country’s oil.So there’s long been a seeming desire by Trump to invade Venezuela, partly on vibe grounds, the state being weak and why shouldn’t we own it, that kind of thing? But underlying that is the notion of the US being a country that can stomp into weaker countries, take their oil, and then nation-build, similar to what the government seemed to be trying to do when it invaded Iraq in the early 2000s, using 9/11 as a casus belli, an excuse to go to war, with an uninvolved nation that happened to own a bunch of oil resources the US government wanted for itself.What I’d like to talk about today is the seeming resurgence of that narrative, but this time with an, actual tangible reason to believe an invasion of Venezuela might occur sometime soon.—As I mentioned, though previously kind of a success story in South America, bringing people in from all over the continent and the world, Venezuela has substantially weakened under its two recent autocratic leaders, who have rebuilt everything in their image, and made corruption and self-serving the main driver behind their decisions for the direction of the country.A very popular candidate, María Corina Machado, was barred from participating in the country’s 2024 election, the country’s Supreme Court ruling that a 15-year ban on her holding public office because of her involvement with an alleged plot against Maduro with a previous candidate for office, Juan Guaido; Guiado is now in exile, run out of the country for winning an election against Maduro, which Maduro’s government has claimed wasn’t legit, but which dozens of governments recognize as having been legitimate, despite Maduro’s clinging to power after losing.So Machado is accused of being corrupt by Maduro’s corrupt government, and thus ...
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    15 分
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