The worst idea of 2020

It’s year-end-list season. Usually, the Vox science team has some fun and compiles a year-end list of bad ideas in health and science that ought to die with the end of the year. In the past, we’ve targeted homeopathic medicine, declared it was time to end the relevance of the fatally flawed Stanford Prison Experiment, and dispelled myths about climate change. This year, though, we have only one target for intellectual demolition.

With the end of 2020, let’s leave behind the idea of using herd immunity acquired through natural infections as a means of combating the Covid-19 pandemic. That’s a lot of words to describe a simple, terrible idea: that we could end the pandemic sooner if more people — particularly young, less at-risk people — get infected with the coronavirus and develop immunity as a result.

As a response to a pandemic, the idea is unprecedented. “Never in the history of public health has herd immunity been used as a strategy for responding to an outbreak, let alone a pandemic,” World Health Organization Director-General Tedros Adhanom Ghebreyesus said in October. “It is scientifically and ethically problematic.”

And yet it held sway — at the White House, in particular.

Former White House adviser Scott Atlas (who is a neuroradiologist, not an epidemiologist) was particularly vocal about pursuing more infections. “When younger, healthier people get infected, that’s a good thing,” Atlas said in a July interview with the San Diego news station KUSI-TV. “The goal is not to eliminate all cases. That’s not rational, it’s not necessary if we just protect the people who are going to have serious complications.”

Let’s be clear: It’s not a “good thing” when young people get sick. For one, some of these young people may die, more may get severely ill, and a not-yet-understood proportion of them could suffer long-term consequences. The more people infected, the more chances for rare, horrible things to happen, like a 4-month-old developing brain swelling after testing positive for Covid-19. For that reason, among others, attempting to keep infections to only young or lower-risk people is a foolhardy game to play.

Why building up herd immunity through natural infections is a bad idea

There’s an almost-understandable case for why some people would push for a herd immunity strategy. We are isolated from those we care about, businesses are hurting, education has suffered, and so has our mental health. What if we could just get back to some parts of normal life and contain the risks to those who are least likely to get hurt?

This thinking has proved reckless. Sweden, a country that pursued a more permissive strategy when it came to social distancing, has a much higher death rate than fellow Scandinavian countries.

And look at what happened in Manaus, Brazil: The city of around 2 million people experienced one of the most severe, unchecked Covid-19 outbreaks in the world. Researchers now estimate that between 44 and 66 percent of the city’s population was infected with the virus, which means it’s possible herd immunity has been achieved there (another estimate pegged the infection rate at 76 percent). But during its epidemic period, there were four times as many deaths as normal in Manaus for that point in the year.

More typically, the term “herd immunity” is referred to in the context of vaccination campaigns against contagious viruses such as measles. The concept helps public health officials think through the math of how many people in a population need to be vaccinated to prevent outbreaks. It’s not meant to be applied to control a pandemic through natural infection. Here are five reasons why:

  1. Even if we could limit exposure to the people least likely to die of Covid-19, this group still can suffer immense consequences from the infection — such as hospitalization, long-term symptoms, organ damage, missed work, high medical bills, and yes, death.
  2. Herd immunity is a very high bar to reach from natural infections. There’s no single, perfect estimate of what percentage of the US population has already been infected by the virus. But by all accounts, it’s nowhere near the figure needed for herd immunity to kick in. The CDC now estimates that there have been 91 million SARS-CoV-2 infections in the US — around 27 percent of the population (though this may be an overestimate). It would take around 60 percent of the population to achieve herd immunity. That’s a rough guess; it could be higher. So we’re about halfway there. Who wants to double the destruction already caused by this virus? In the US, more than 330,000 people have died. (Plus, herd immunity doesn’t work on a nationwide basis but a community-by-community basis. In other words, some communities are still much more vulnerable than others.)
  3. Scientists don’t know how long naturally acquired immunity to the virus lasts, or how common reinfections might be. If immunity wanes and the reinfection rate is high, it will be all the more difficult to build up herd immunity.
  4. By letting the pandemic rage, we risk overshooting the herd immunity threshold. Once you hit the herd immunity threshold, it doesn’t mean the pandemic is over. “All it means is that, on average, each infection causes less than one ongoing infection,” Harvard epidemiologist Bill Hanage told me. “That’s of limited use if you’ve already got a million people infected.” If each infection causes an average of 0.8 new infections, the epidemic will slow. But 0.8 isn’t zero. If a million people are infected at the time herd immunity is reached, per Hanage’s example, those already-infected people may infect 800,000 more.
  5. A herd immunity strategy is likely to harm some groups more than others. There are multiple reasons someone could experience a severe case of Covid-19. It’s not just age — conditions such as diabetes and hypertension also exacerbate risk. So do societal factors including poverty, working conditions, and incarceration.

In the US, severe Covid-19 deaths have disproportionately impacted minorities and less advantaged populations. Encouraging herd immunity through coronavirus infection risks further isolating these already marginalized communities from society, since they may not feel safe in a more relaxed environment. Or, even worse, we risk sacrificing their health in the name of reaching a level of population immunity sufficient to control the virus.

Soon, herd immunity will be a good thing — because of vaccines

Thankfully, we now have a means of building up herd immunity without the risks conferred by infections: vaccines. Unlike the immunity conferred by an actual viral infection, immunity obtained via vaccine doesn’t come with the cost of sickness and death. Vaccines are safe. And while they won’t turn the pandemic around overnight, they will help end it.

We still have to do some difficult waiting. Vaccine rollouts will be slow. Throughout 2020, “herd immunity” was used as a stand-in for “let the pandemic spread.” There was also persistent and erroneous wishful thinking by some who said herd immunity had already been reached, or could be reached sooner than scientists say, or without incurring horrible losses. Yes, the economic restrictions of the pandemic were, and still are, painful. But it’s also true the government could have done more to help.

Soon, herd immunity will become a good-news phrase as we build toward it collectively — and safely — through vaccines. As the vaccines get distributed, herd immunity will develop in a controlled, ethical manner. The pandemic will wane.

And as it does, let’s not forget: The calls to build up herd immunity through infections were a terrible idea. Let’s not repeat them in the future.

Correction: An earlier version of this article misstated the Covid-19 death rate in Sweden compared to other European countries.

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In 2020, scientists documented hundreds of new species. Here are a few.

It’s the year 2020, and scientists are still discovering new species of life on Earth. No one knows exactly how many types of life are yet undescribed in the scientific literature; estimates range from around 86 percent to as high as 99.99 percent. And even though we’re living through an age of great biodiversity loss, the scope and breadth of life on planet Earth is still revealing itself to scientists around the world.

This year, researchers at the California Academy of Sciences have described 213 new species in scientific journals: “101 ants, 22 crickets, 15 fishes, 11 geckos, 11 sea slugs, 11 flowering plants, eight beetles, eight fossil echinoderms, seven spiders, five snakes, two skinks, two aphids, two eels, one moss, one frog, one fossil amphibian, one seahorse, one fossil scallop, one sea biscuit [a.k.a. sand dollar], one fossil crinoid (or sea lily), and one coral,” the academy lists in a press release.

These species weren’t necessarily first spotted this year. Instead, they were officially described in the scientific literature as unique species, some after decades of research.

Terry Gosliner, a curator of invertebrate zoology at the California Academy of Sciences, added one species of sea slug he first saw on a dive in the Philippines 23 years ago. As a sea slug expert, he knows immediately when he’s spotted one he hasn’t seen before. “It’s like if you walk into a room, and you know, almost immediately, if there’s a person in there who you haven’t met before,” he says.

But on that first encounter decades ago, Gosliner didn’t collect a specimen that would allow for DNA analysis, which is crucial for understanding if a presumed new species is actually new to science. Plus, this particular sea slug was nocturnal. “You just happen to have a chance encounter with it on a night dive,” he says. He found a second specimen in 2010. By then, “it was like encountering an old friend that you hadn’t seen forever,” he says.

It’s taken even more time to determine that this creature — now named Hoplodoris rosansis a truly new entry in the scientific books of life. “The easiest part is finding them,” Gosliner says of discovering new species. The hard part is the scientific work that comes next.

After finding a species, “it’s a very lengthy process after that,” he says to describe a new species. Scientists need to study the DNA, the internal anatomy and external anatomy, “so that you can make comparisons about how that species differs from all the other species that are known.” Then those discoveries have to be written up and submitted to a peer-reviewed journal.

Gosliner and his colleagues also got to name the new species. They call it Hoplodoris rosans for a few reasons. Hoplodoris is the genus of the sea slug. But its species name, rosans, is named after the rose. They chose that because, for one, there are reddish-pink spots on the underside of the body. And two: “It has in its reproductive system this very large spine that holds mates when mating that was shaped like a rose thorn,” Gosliner says.

Along with Hoplodoris rosans, researchers at the California Academy of Sciences have described this year:

A pygmy seahorse about the size of a grape, called Hippocampus nalu.

A gecko residing in the city of Guwahati, India, called Cyrtodactylus urbanus.

The first species of pipefish known to live among red algae, called Stigmatopora harastii.

A newly described flowering plant in Brazil in the Microlicia genus, Microlicia capitata.

And a new sea biscuit (sand dollar) in the Philippines, Clypeaster brigitteae.

Why scientists need to keep documenting life on Earth. And how you can, too.

It’s been a tough year full of sickness and death with the Covid-19 pandemic. It’s hopeful knowing how much there is yet to be discovered about our world. And it’s important work, too.

Between 2010 and 2020, 467 species have been declared extinct (though they might have actually gone extinct in decades prior), according to the global authority on species conservation status, the International Union for Conservation of Nature, or IUCN. Others have been brought to the brink, and still more are seeing serious declines in their population numbers.

In all, the UN’s Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services estimates as many as 1 million species are now at risk of extinction if we don’t act to save them; that number includes 40 percent of all amphibian species, 33 percent of corals, and around 10 percent of insects.

A species can be discovered nearly anywhere: In 2012, a new species of ant was discovered in New York City, of all places. If you’re interested in species sleuthing, Gosliner recommends using the iNaturalist app to document critters and plants you see out in the world.

There, a community of citizen scientists can help determine if what you’ve scouted is truly new. And you don’t need to find something new, per se, to contribute to science. “Just yesterday,” he told me on December 18, “on iNaturalist there was a species of nudibranch [sea slug] that was found in the tide pools just south of San Francisco, that nobody had seen for many, many years. And so that was a really exciting thing to have documented.”

To protect more species, scientists need to know they exist in the first place.

“Describing new species is really documenting biodiversity on the planet,” Gosliner says. “There’s so many areas that we may lose species before we even know that they existed. If you never knew it existed, [and] then it disappeared — that’s kind of a tragedy from my standpoint. There’s the element of the excitement of discovering something new. But also, there’s the urgency that we really need this information to be able to protect biodiversity on the planet.”

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History for Ardscoil Rís as they take a first colleges title back to Limerick

Updated Thu 8:10 PM

Ardscoil Rís 1-17
St Kieran’s College 0-15

Robert Cribbin reports from Croke Park

ARDSCOIL RÍS OF Limerick captured their first ever All-Ireland senior hurling colleges title after claiming a five-point victory over Kilkenny aristocrats St Kieran’s College in Croke Park this afternoon.

Ardscoil Rís were appearing in their fourth ever final and after losing out in all three previous deciders to St Kieran’s in 2010, 2011 and 2016, Niall Moran’s side finally reversed the trend.

Kieran’s themselves were in a seventh consecutive showpiece and they were hoping to make it five wins in six, and despite Harry Shine giving them an opening minute lead, they were chasing shadows for the majority of the contest as the Limerick school were fully warranted winners.

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Despite Niall O’Farrell squandering a 19th minute penalty for the Munster finalists, the youngster who was a late addition to the team caused huge problems for Kieran’s as he finished with seven points in total.

It was nip and tuck up until that point with Kieran’s leading 0-5 to 0-4 after Shine and Joe Fitzpatrick impressed early on but the final 10 minutes of the half belonged to Ardscoil Rís as they hit six points on the trot to go into the break with a commanding advantage.

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Source: Tom Maher/INPHO

As they always tend to do, Kieran’s battled back and when they got within two points of their opponents with the wind at their back they appeared to be in prime position to catch the Limerick side in the final stretch.

Unlike previous years, though, it was Niall Moran’s Ardscoil Rís team who finished the better and when David Kennedy shot past Alan Dunphy in the 55th minute for the game’s only goal, celebrations could begin in earnest as they powered to a 1-17 to 0-15 success.

Scorers for Ardscoil Ris – Niall O’Farrell (0-7, 0-4f, 0-1 65), David Kennedy (1-3), Shane O’Brien (0-4), Rian O’Byrne, Jack Golden, Dylan Lynch (0-1 each).

Scorers for St Kieran’s College – Harry Shine (0-4, 0-2f), Joe Fitzpatrick (0-4, 0-1f), Ben Whitty (0-3, 0-1 65), James Carroll, Donagh Murphy, Padraig Naddy, Paddy Langton (0-1each).

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Ardscoil Ris – Seimi Gully; Evan O’Leary, John Fitzgerald, Colm Flynn; Michael Gavin, Cian Scully, Vince Harrington; JJ Carey, Rian O’Byrne; Shane O’Brien, Niall O’Farrell, Jack Golden; Brian O’Keeffe, Oisin O’Farrell, David Kennedy. Subs: Dylan Lynch for Flynn 48 mins, Diarmuid Stritch for O’Byrne 58 mins, Sean McMahon for O’ Keeffe 59 mins.

St Kieran’s College- Alan Dunphy; Jack Butler, Adam O’Connor, Paddy Langton; Padraig Lennon, Joe Fitzpatrick, Conor Cody; James Carroll, Killian Doyle, Ted Dunne, Harry Shine, Ben Whitty, Donagh Murphy, Luke Connellan, Padraig Naddy. Subs: Anthony Ireland Wall for Naddy 41 mins, Alex Sheridan for Murphy 51 mins, Nick Doheny for Dunne 56 mins.

Referee – Liam Gordon (Galway)

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Big electric trucks and buses are coming. Here’s how to speed up the transition.

There’s a growing consensus in the climate change community that the key to transitioning the US economy from fossil fuels is to electrify everything — shift the electricity grid over to carbon-free power and shift other big polluting sectors like transportation and heating over to electricity.

When it comes to transportation, electrification is going to be tricky. Not long ago, the consensus was that the cost and power limitations of batteries would make it difficult to fully electrify anything larger than passenger vehicles.

But batteries have been progressing in leaps and bounds. Full electrification is still beyond the reach of huge vehicles, the long-distance airliners and container ships, but recently it has become a possibility for a large and significant category of vehicles in the middle: medium- and heavy-duty trucks and buses.

According to the Environmental Protection Agency, just 6 percent of the registered vehicles on US roads in 2018 were medium- and heavy-duty, but they were responsible for 23 percent of transportation-sector greenhouse gas emissions (about 7 percent of total US emissions).

Since they mostly run on diesel engines, they also produce enormous amounts of air and noise pollution, which fall disproportionately on low-income and communities of color that may live closer to highways and are more likely to use buses. Long-haul trucks alone, while responsible for less than 6 percent of vehicle miles traveled on US highways, produce about 40 percent of its particulate pollution and 55 percent of its nitrogen oxides.

The global toll is immense: 180,000 deaths a year from diesel pollution.

That’s where medium- and heavy-duty electric trucks (MHDETs) come in. They are quiet, emit zero tailpipe pollution, and draw power from an increasingly clean electricity grid. An impossible dream a decade ago, they are now the subject of fierce competition from big automakers like Daimler, Volvo, VW, and Tesla, with multiple models slated to hit the road in coming years.

As countries across the world start cracking down on carbon emissions — and cities ramp up their fight against diesel pollution — there’s going to be an enormous market for clean alternatives. According to the Department of Transportation, there are over 14 million large trucks and buses on US roads. Wood Mackenzie expects the number of electric trucks on US roads to rise from 2,000 in 2019 to more than 54,000 by 2025, around 27 times growth. The research firm IDTechEx expects the MHDET market to reach $47 billion by 2030.

Demand is partly being driven by big fleet owners like Amazon, Walmart, Ikea, Anheuser-Busch, and Pepsi, which are transitioning to MHDETs. (Amazon recently ordered 100,000 electric delivery vans.)

Policymakers are helping, too. In July, governors of 15 states signed a memorandum agreeing to set up a MHDET task force, develop an action plan, and jointly “strive to make sales of all new medium- and heavy-duty vehicles in our jurisdictions zero emission vehicles by no later than 2050,” and in the interim, “strive to make at least 30 percent of all new medium- and heavy-duty vehicle sales in our jurisdictions zero emission vehicles by no later than 2030.” New York City, Los Angeles, Houston, and other cities are already exploring electric buses.

And don’t forget Jeff Bezos. One of his big climate gifts was $100 million over five years to the World Resources Institute, which will use it in part on a program to electrify school buses. Before him was the Hewlett Foundation’s 2020 Zero Emission Road Freight Strategy 2020-2025.

MHDETs are gaining momentum and there is every reason to believe that they will come to dominate the market. But societies do not have to simply sit back, watch markets, cross their fingers, and hope for the best. They can accelerate the spread of MHDETs — and their associated health and climate benefits — by targeting the many barriers that remain in a smart, proactive way.

To get a better sense of those barriers and opportunities, let’s look at two reports that were recently released on the subject, one from the Electrification Coalition (a collection of businesses and nonprofits) and one from the Environmental Defense Fund (EDF). Both focus on the challenges of electrifying MHDETs and how to overcome them.

The total cost of fleet electrification remains high

The purchasers of big buses and trucks are not typically buying single vehicles. They are almost all managers of fleets of vehicles. So the question of whether to electrify goes beyond whether the next truck might be cheaper electric. Electrifying a fleet is a big, complicated process that involves buying and installing new charging infrastructure and changing operational procedures, in the face of considerable uncertainty and risk.

EDF offers a framework that tries to pull all these costs and risks together into a single metric: the total cost of electrification (TCE). TCE goes beyond the conventional metric of total cost of ownership (TCO), meant to be inclusive of capital, operations, and infrastructure costs, to include less quantifiable social, operational, and even psychological costs.

So what are these barriers to MHDETs? The Electrification Coalition identifies nine:

1. Higher upfront vehicle costs and associated tariffs

Several surveys have found that the higher upfront costs associated with fleet electrification — not only the vehicles but the associated infrastructure — are the primary deterrent for fleet managers. And upfront costs are higher today, though that is changing. Bloomberg New Energy Finance expects medium-duty EVs to reach cost parity by 2025 and heavy-duty EVs by 2030.

Here’s a graph from the Hewlett Foundation showing when TCO parity will be reached by various kinds of electric trucks. Note that all classes of EV trucks will be cheaper on a TCO basis by 2030:

In addition, new heavy-duty trucks face a steep (12 percent) federal excise tax, which is even more on the higher-price EVs.

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“The near-term higher upfront costs associated with MHDETs are likely to remain a substantial barrier to fleets for the next five to 10 years,” the Coalition writes.

2. Costly and complex charging infrastructure processes

Fleet managers are daunted by the complicated considerations involved in determining how much charging infrastructure is needed to support a fleet of MHDETs, finding a way to pay for it, and then fighting through the siting, permitting, and interconnecting hassles.

3. Early market and limited model availability versus limited fleet demand

Because there hasn’t been much regulatory pressure and MHDETs are relatively new and untested, fleet managers have been wary and demand has been low; because demand has been low, there are limited models and options available. (This should change soon as models roll out in coming years.)

4. Entrenched market advantages of diesel trucks

Diesel has been playing a big role in commercial transportation for a century; consequently, the vehicles, supply chains, and service networks are well-developed. MHDETs are newer and still trying to work all that stuff out.

5. Commercial and industrial electricity rate structures not aligned to charging needs

On average, electricity is a cheaper fuel than gas or diesel, but that cost advantage can be eroded or erased by bad rate design, with fixed rates or high peak charges.

6. Lack of verified data on total cost of ownership and performance specifications

Because there aren’t that many MHDETs on the road, and pre-production models don’t release their specs, it can be difficult for fleet managers to verify whether particular MHDETs can meet their fleet’s operational needs.

7. Limited availability of certified service centers and technicians

Again, because this is nascent technology, there aren’t many support services and trained technicians — that’s a major problem when it comes to these big vehicles because they tend to be used intensely and require continual support.

8. Concerns with grid resiliency

As more fleets electrify, there are greater concerns about the pressure put on electrical infrastructure that is in some cases already under stress, especially in congested areas. “Without proactive evaluation and investment to support these potential grid and generation upgrades,” the Coalition writes, “the transition to electrified freight could see significant delays and infrastructure impediments.”

9. Antiquated vehicle and facility ownership structures

Many fleet operators use leased facilities that may not have the infrastructure to handle electrification, and even if they can persuade the owners to allow upgrades, they have little incentive to take on all the costs for a property they don’t own. The cost of facility upgrades needs to be shared, perhaps with utilities as well.

As you can see, some of these problems involve “hard costs” like equipment and infrastructure, some involve “soft costs” like operational changes, and others are simply risks, which impose costs of their own. Fleet managers are not hyper-rational interest maximizers. They have limited knowledge, time, mental energy, and staff to devote to these questions. These frictions and uncertainties — about infrastructure, battery performance, maintenance costs, shifting public policies — can easily become overwhelming. The old ways of doing things, maintaining and ordering more diesel vehicles, have their own inertia.

Measures to accelerate MHDETs must target the full range of barriers.

Financing and policy tools can hasten the spread of electric trucks and buses

There are lots of financing, policy, and private-sector tools that can reduce the barriers to fleet electrification. Both reports get pretty deep in the weeds, so I will just briefly summarize. The Electrification Coalition offers the simplest way of dividing up the toolkit:

1. Policy

Local, state, and federal governments can all takes steps to boost MHDETs, including targets for vehicle sales, programs to fund and expand charging infrastructure, clean fuel standards (like California’s), and purchase incentives, among others.

2. Utilities

Utilities can set up programs that support private investment in vehicle charging infrastructure. They can more carefully and comprehensively assess the impact of EV growth on electricity demand, in order to plan and invest wisely. Perhaps most of all, they can reform electricity rates to be friendlier to electric fleets.

3. Supply chain

Participants in the MHDET supply chain can work to ease frictions as well. They can standardize charging connectors, invest in smart, networked EV charging management software, take proactive steps to guard against upstream supply disruptions (by diversifying materials), and set up a network of MHDET service centers and trained technicians.

4. Corporations

Corporations that want to clean up their operations can set deployment goals for MHDETs and run pilot programs for new vehicles and networks. They can combine fleet orders and make big purchase commitments to help drive economies of scale.

5. Collaboration

All the aforementioned parties will need to work together to share knowledge and best practices, technical and funding support, and outreach to the public and other stakeholders.

This barely scratches the surface, of course. (EDF has its own extensive list of tools.) But it gives a sense of the breadth of instruments and participants involved. All that’s required to drive MHDETs to market scale is the leadership to get this kind of cooperative action moving.

Unlike a carbon price, real industrial policy is going to be complicated and messy

For many years, climate policy wonks looked at the vast array of economic sectors and activities that must change in order to substantially reduce carbon emissions and concluded that the best and most efficient way forward was to change them all at once, with a single instrument: a price on carbon. Pulling on that one lever would move every part of the economy in concert. It is an elegant dream.

The fixation on carbon pricing lives on in many quarters, but for many climate hawks the elegant dream does not match how politics or people actually operate. What has worked in the past, and is likely to work in the future, is industrial policy: targeted, sector-specific efforts to accelerate some technologies and practices and phase others out. Industrial policy is at the heart of the new climate policy alignment on the left, evident in the Green New Deal, in the many policy platforms and proposals that spilled out of it, and in President-elect Joe Biden’s climate plan.

Industrial policy doesn’t look like an elegant dream. It looks like these reports on MHDETs.

It requires a detailed understanding of the dynamics within the sector, the key barriers to change, and the kinds of tools that have proven effective against such barriers. The barriers can be technological, they can grow out of archaic practices or regulations, or they can be socio-psychological. There’s no way to understand them and the opportunities for overcoming them until the stakeholders are heard, the data is crunched, and the analysis is done. It’s a hands-on, labor-intensive affair, especially if done well.

And because it involves so much effort from so many parties, it’s inevitably messy to implement, full of compromises and half-measures, rarely optimized to an economist’s satisfaction.

But throughout American history, industrial policy has produced wonders, from transistors and computers to pharmaceuticals, renewable energy, and, uh, fracking. If the US can muster the will, it can engineer a rapid transition from diesel trucks and buses to electric. It has done much bigger things than that.

The clean-energy transition will be accomplished not by any one policy, but sector by sector, fighting for every inch. Electrifying trucks and buses is worth the fight.