Saturday, August 30, 2025
Good read for a Saturday morning.
Tuesday, July 08, 2025
Might the warming world be a boon to women?
That's probably overstating it, but apparently women need to be warmer than men to feel comfortable.
According to the BBC, there's a measurable reason why women tend to think air conditioning is set too high while men want the temperature lowered. Or so a new study suggests.... women feel the cold more readily - one small sample test the researchers carried out suggests that women are comfortable at a temperature 2.5C warmer than men - between 24-25C.
According to Prof Paul Thornalley, of Warwick Medical School, variation in average metabolic rate and body heat production between men and women "may explain why there is a difference in environmental temperature required for comfort between males and females".
The body's metabolism is responsible for growth and the production of energy, including heat. Resting metabolic rate is the minimal rate of energy expenditure per unit of time while we are at rest, calculated through a standard set of equations. On average women have a lower metabolic rate than men.
"A great determinant of resting metabolic rates is the fat free body mass in people's bodies," says Thornalley - accounting for around 60% of the individual difference in men and women's resting metabolic rates. Because men have more fat free body mass - all the components of the body like skin, bones and muscle, but excluding fat - than women, they have a higher resting metabolic rate.
... This higher proportion of body mass which is able to produce heat involuntarily means that on average men don't feel the cold as easily as women - and, in sultry summer months, means they have a lower tolerance for hot weather because their bodies produce more heat at a resting metabolic rate, getting warmer quicker.
Well maybe. Obviously people are different; individuals of both sexes may experience temperatures quite differently. And, the BBC points out, convention dictates to some women that we wear less clothes ...
Saturday, June 21, 2025
Pacifica will not go quietly
Along Highway One at Mori Point in Pacifica this morning, folks were alerting passing motorists to their anger at the Trump regime. There were plenty of friendly honks.
Mori Point is part of the Golden Gate National Recreation Area -- like the rest of the National Parks, attractive real estate that Trump would happily sell off to his billionaire buddies for development. Or turn over to mining interests if they want these places.The MAGA Budget Bill now moving in the Senate would cripple many of our parks. The National Parks Conservation Association is leading the pushback.
Wednesday, April 09, 2025
Breathing a little easier
Even two decades ago, the gray haze over Kathmandu obscured the magnificent views of the surrounding mountain ranges. The valley is prone to temperature inversions, meaning warmer air at higher altitudes traps airborne pollution. It was hard to breath while trudging about and dodging exhaust-belching mini-buses and trucks even in 2006 when I took this picture out a hotel window.
According to Bill McKibben via The Guardian, Nepal is doing as well as anywhere replacing its fossil fuel fog with less polluting electric vehicles.
A heartening report from Kathmandu, one of the world’s smokiest cities, shows that the Nepali capital is rapidly cleaning its air as electric minibuses and cars start to dominate the local scence
More than 70% of four-wheeled passenger vehicles – largely cars and minibuses – imported into Nepal last year were electric, one of the highest rates in the world. The figure reflects a remarkable growth in the use of electric vehicles (EVs), which saw the country import more than 13,000 between July 2023 and 2024, up from about 250 in 2020-21.
Nepal’s government has set ambitious targets for wider take-up of EVs, with the aim that 90% of all private-vehicle sales and 60% of all four-wheeled public passenger vehicle sales will be electric by 2030.
Makes sense. Nepal produces abundant, clean, hydroelectric power as water runs off the Himalayas.
Chinese made BYD vehicles are available to Nepalese buyers. Great to see.Sunday, December 22, 2024
For the fourth Sunday in Advent: we work in joyful hope
Bill McKibben is one of the best of us. Diana Butler Bass asked the Methodist environmental activist for his 2024 Advent reflection.
... Even in 2024, there are some things to be looking forward to. For me, the most important is the real possibility that in the next few years, we could be seeing quick end to human beings making their living by setting things on fire, coal, gas, oil, anything else.
Because all of a sudden, we've really figured out how to capture the power of the sun that the good Lord hung 93 million miles up in the sky. That star that we need to make our North Star in the climate fight.
This year, just to give you one example, so many people just went out in the country of Pakistan and installed solar panels on their roofs, on their farms, everywhere else, that the use of diesel fuel dropped 30% in a year. Those are the kind of numbers that help us deal with climate change
And they're because we're using our God-given wits to make the most of the world around us. It won't be easy. It'll require lots of activism and pushing to make it happen. We'll have lots of opportunities to do that. But there are powerful forces afoot in God's world that give us some real chance.
He's not blowing hot air. Quite separately in his own substack, McKibben has described the progress humankind is making on ending our dependence on fossil fuels which pollute the atmosphere and alter the climate.
Here’s a contestant for the dumbest headline of all time (and no shade on the writer, because They Do Not Write The Headlines). The normally insightful team at Bloomberg produced an article about the remarkable fact that as the Chinese market breaks decisively for EVs, this is driving down demand for gasoline. Instead of heralding this as a potentially mammoth breakthrough in the climate fight, here’s how they titled it: “China’s EV Boom Threatens to Push Gasoline Demand Off a Cliff.”
The more rapid-than-expected uptake of EVs has shifted views among oil forecasters at energy majors, banks and academics in recent months. Unlike in the US and Europe - where peaks in consumption were followed by long plateaus — the drop in demand in the world’s top crude importer is expected to be more pronounced. Brokerage CITIC Futures Co. sees Chinese gasoline consumption dropping by 4% to 5% a year through 2030.
“The future is coming faster in China,” said Ciaran Healy, an oil analyst at the International Energy Agency in Paris. “What we’re seeing now is the medium-term expectations coming ahead of schedule, and that has implications for the shape of Chinese and global demand growth through the rest of the decade.”
For a global oil market, which has come to rely on China as its main growth driver for most of this century, that will erode a major pillar of consumption. The country accounts for almost a fifth of worldwide oil demand, and gasoline makes up about a quarter of that. The prospect of a sharp drop from transport is also coming on top of tepid industrial consumption due to slowing economic growth. ...
The U.S. may not be at its best. But though we're often a shortsighted, self-centered species, we humans collectively do have an instinct leaning toward trying to leave something for future generations.
Monday, September 16, 2024
If warming stalls, thank China
In climate world, something that once seemed almost unthinkable may now be happening. Preliminary data shows that while global carbon emissions are continuing to rise, China’s emissions may already be peaking — the longtime climate villain turning the corner on carbon before the planet as a whole does.
Forecasts like these are not perfectly reliable, but already China has completely rewritten the global green transition story. You may be familiar with the broad strokes of that story: that thanks to several decades of mind-boggling declines in the cost of solar, wind and battery technology, a new wave of climate advocacy and dramatically more policy support, the rollout of various green energy technologies is tracing an astonishing exponential curve upward, each year making a mockery of cautious projections from legacy industry analysts.
But while this is often hailed as a global success, one country has dominated recent progress. When you look at the world outside of China, those eye-popping global curves flatten out considerably — green energy is still moving in the right direction, but much more slowly.
Consider solar power, which is presently dominating the global green transition and giving the world its feel-good story. In 2023, the world including China installed 425 gigawatts of new solar power; the world without China installed only 162 gigawatts. China accounted for 263 gigawatts; the United States accounted for just 33. As recently as 2019, China was installing about one-quarter of global solar capacity additions; last year, it managed 62 percent more than the rest of the world combined. Over those same five years, China grew its amount of new added capacity more than eight times over; the world without China didn’t even double its rate. ...
He goes on to survey similar progress in China in wind, batteries and other technologies.
While American politicians argue about tariffs to try to protect an anemic manufacturing capacity for the green energy transition, Xi Jinping saw Chinese green tech as an economic driver replacing China's collapsing real estate bubble -- and the rest is history.
The full article is at a gift link and well worth reading.
Friday, September 13, 2024
It's happening ... the clean energy transition
California hit 100 days this year with 100% carbon-free electricity for at least a part of each day — a big clean energy milestone.
And it's happening with only the most concerned and attentive citizens talking about it.
David Kurtz laments:
Climate change got short shrift in the [Harris/Trump] debate, a single question framed in the most unsophisticated, open-ended way:
The question to you both tonight is what would you do to fight climate change? And Vice President Harris, we’ll start with you. One minute for you each.
It’s a measure of the degraded state of our public discourse about climate change that the debate question would be so general and non-specific – with an entire 60 seconds to respond.
But maybe that's just how it has to take place. What is happening is just too novel, too fast, for most of us and our information systems to assimilate.
Bill McKibben, prophet of both climate doom and climate hope, has lots more.
Statistics numb the brain so let me say it another way: we are on the cusp of a true explosion that could change the world. We are starting to put out the fires that humans have always relied on, and replace them with the power of the sun.
... Bloomberg predicted last week that global installations of new solar modules would hit 592 gigawatts this year—up 33 percent from last year. The point is, when you’re doing this a few years in a row the totals start to grow very very fast. When something that provides one percent of your electricity doubles to two percent, that doesn’t mean much—but when something that supplies ten or twenty percent goes up by a third that’s actually quite a lot. And more the next year.
... That is, the use of natural gas to generate electricity has dropped by almost a third in one year in the fifth largest economy in the world. In 2023, fossil gas provided 23% more electricity to the grid than solar in that six month period. In 2024, those numbers were almost perfectly reversed: solar provided 24 percent more electricity than fossil gas, 39,865 GWh v 24,033 GWh. In one year. That’s how this kind of s-curve exponential growth works, and how it could work everywhere on earth,
For McKibben, this is how the election matters:
... if Trump wins, there’s tons that he can do to slow the transition down. He can’t “kill wind,” as he has promised. But he can make it impossible for it to keep growing at the same rate—right now there are teams in the White House managing every single big renewable project, trying to lower the regulatory hurdles that get in the way of new transmission lines, for instance. A Trump White House will have similar teams, just operating in reverse.
Again, he can’t hold it off forever—economics insures that cheap power will eventually win out.
But eventually doesn’t help here, not with the poles melting fast. We desperately need clean energy now. That’s what this election is about—will Big Oil get the obstacle it desperately desires, or will change continue to play out—hopefully with a big boost from the climate movement for even faster progress.
The bold type here is McKibben's except in that last paragraph. We citizens are not focused on climate and energy; for most of us, it's all just too big and too scary to contemplate. But it's happening; this election will help determine how fast and even, perhaps, how equitably.
Thursday, June 27, 2024
Good news from Calfornia and a surprising competitor
Here's Bill McKibben:
Something approaching a miracle has been taking place in California this spring. Beginning in early March, for some portion of almost every day, a combination of solar, wind, geothermal, and hydropower has been producing more than a hundred per cent of the state’s demand for electricity. Some afternoons, solar panels alone have produced more power than the state uses. And, at night, large utility-scale batteries that have been installed during the past few years are often the single largest source of supply to the grid—sending the excess power stored up during the afternoon back out to consumers across the state. It’s taken years of construction—and solid political leadership in Sacramento—to slowly build this wave, but all of a sudden it’s cresting into view. California has the fifth-largest economy in the world and, in the course of a few months, the state has proved that it’s possible to run a thriving modern economy on clean energy. ...
It would be easy to be all doom and gloom -- but citizen activism and applied science are making this happen.
Meanwhile, sheer economic self-preservation is making renewable energy boom in Texas. Yes, Texas!
Traditionally considered to be "oil country," Texas continues to have a heavy fossil fuel presence in the state. Though it may not seem like the likeliest candidate on the surface, the state is a pioneer of clean and renewable energy production. Texas generated roughly 15% of the country's electricity from all-renewable sources in 2022, according to the Energy Information Association.
While it was wind power that helped blow Texas to the top of the clean energy production charts, increased solar capacity in recent decades has helped its standing. Through 2022, Texas was the second-largest producer of solar energy behind California, according to data from the Solar Energy Industries Association. ...
We're smarter big apes than we sometimes realize.
Saturday, June 22, 2024
Humans might be smarter than we often seem
We have, I think, gotten to where we don't have to be told that the climate is changing -- warming and also becoming more unpredictably wild.
But perhaps more than we recognize, the human species -- subset United State-ians -- is finally doing something about reducing fossil fuel use by adding renewable energy sources.
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Thursday, May 09, 2024
Such moderate gas prices!
Californians pay more at the pump than residents of any other state — an average of $5.34 a gallon for regular unleaded, compared to the national average of $3.64, according to AAA. Statewide, gas prices have jumped 55 cents a gallon from this time a year ago.
Governor Newsom suspects the oil industry of sticking it to Californians in pursuit of windfall profits.
Most of the rest of the country reports what seem truly lower prices than on either coast:
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Tuesday, April 23, 2024
Recycling that could become self-sustaining
It's hard to stay enthusiastic about urban recycling when you've seen urban trash haulers just dump your recycling into the same truck with the solid waste.
But industrial recycling may well be an important part of our response to climate change. Instead of proliferating waste, let's hope our eager engineers can figure out how to make money off it.
Such a thing may be underway in north western Nevada, a region fast becoming a tech-industrial hub.According to Bloomberg:
In the scrublands of western Nevada, Tesla co-founder JB Straubel stood on a bluff overlooking several acres of neatly stacked packs of used-up lithium-ion batteries, out of place against the puffs of sagebrush dotting the undulating hills. As if on cue, a giant tumbleweed rolled by. It was the last Friday of March, and Straubel had just struck black gold.
Earlier that day, his battery-recycling company, Redwood Materials, flipped the switch on its first commercial-scale line producing a fine black powder essential to electric vehicle batteries. Known as cathode active material, it’s responsible for a third of the cost of a battery. Redwood plans to manufacture enough of the stuff to build more than 1.3 million EVs a year by 2028, in addition to other battery components that have never been made in the US before.
It’s a turning point for a US battery supply chain that’s currently beholden to China. ... Redwood is attempting to break that stranglehold by creating a domestic loop using recycled critical metals.
... EVs already have a much smaller environmental footprint than internal combustion cars, even in countries that still get most of their electricity from coal. While the toll of mining the raw materials for batteries is considerable, more than 95% of the key minerals can be profitably recycled.
At Redwood, nothing goes to landfill, and no water leaves the facility except the sanitary waste from sinks and toilets. There are no gas lines; everything is electric. It’s also built for scale, allowing the company to quickly break down a truckload of assorted batteries without manual sorting or tedious disassembly.
Recyclers will eventually need to match the pace of car factories. For example, a Tesla factory just 250 miles away in Fremont, California, produced 560,000 EVs last year — more than one every minute. When it’s time for those cars to be recycled, they will generate almost 10 times as much EV battery material as the entire US market processed last year. If recyclers can handle all of that, they would begin to rival traditional mining operations.
“Once we've changed over the entire vehicle fleet to electric, and all those minerals are in consumption, we’ll only have to replace a couple percent each year that’s lost in the process,” said Colin Campbell, Redwood’s chief technology officer and the former head of powertrain engineering at Tesla. “It will become obvious to everyone that it doesn't make sense to dig it out of the ground anymore.”
My emphasis. This Bloomberg article goes on to raise the considerable obstacles that battery entrepreneurs could encounter, including reaching necessary scale to supply the new industry, while China may find it in its interest to undercut the costs of their output.
But it's happening ... and subsidized by the legislation that the Biden Administration squeezed out of Congress to underwrite sustainability. Weird that a government led by a white haired old guy is so forward looking, but there it is.
Wednesday, December 06, 2023
Electric vehicle anecdata
Automakers are tapping the brakes on their ambitious electric vehicle (EV) targets, trying to make sense of consumer appetites amid rising interest rates, stubbornly high prices and anxiety about where to recharge. ...... Despite the doom and gloom, EV sales are growing faster than any other segment in the U.S. — and are on track to surpass 1 million annually for the first time this year.
Not a model of definitive journalism, but that's where we are.
Where are you in this chart?
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Discourses of climate delay |
Tuesday, November 28, 2023
In this fortunate land, we all do it
I find this graphic more than a little depressing.
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Gallop did a survey and Mitre provides an analysis of the national habits.
Have you ever heaped your plate at a buffet, only to realize your eyes were bigger than your stomach? Or uncovered a container of unrecognizable leftovers? Maybe there was a tempting sale on the jumbo-sized bag of clementines, which you can’t possibly finish before they shrivel on the counter.
As much as we’d like to deny it, each of us has let food go to waste. ... By reducing food waste, we can reduce the need for land and resources used to produce food as well as the greenhouse gases released in the process.
We try to do our bit for our budgets and the climate. Erudite Partner made this lovely duck soup from the remnants of the Thanksgiving feast.
Tuesday, November 14, 2023
Searching for sustainability
The National Climate Assessment, compiled by numerous federal agencies and published every few years at the direction of Congress, paints a picture of a nation whose economy, environment and public health face deepening threats as the world grows hotter.
... But the report adds that the most dire consequences are not inevitable, and that society has the capacity to shape what lies ahead. “Each increment of warming that the world avoids … reduces the risks and harmful impacts of climate change,” the report states.Meanwhile, another section of the same newspaper celebrates emerging technologies (gift article) which can make a difference. It predicts rapid adoption on a scale that that mirrors how the internet and cellphones took over our lives in the last 30 years.
Judging by the surging sales of green technology, U.S. households appear to be on the verge of a low-carbon future. Millions of Americans are buying electric vehicles, heat pumps and induction ranges. ...
Not all new technologies make it big: Segway, Palm personal device, 3D television. But those that start ascending this curve tend to transform societies.
How fast Americans reach that point with green technologies is up to early adopters, about 15 to 20 percent of the population. They set the stage for this exponential growth by trying products before others do.Let's hope that's right. The most advanced elements among the technologies discussed here are heat pumps to replace oil and gas furnaces.
... Heat pumps are no longer reliant on early adopters despite being early in the cycle, suggesting Americans are well on track to meet net-zero goals by 2050. As far as clean technologies go, it’s the one most popular among Americans so far.Friends know that the Erudite Partner and I are on the east coast because we're shepherding a heat pump system installation in a jointly-owned family house. The state of Massachusetts offers a great rebate for this project; that yellow blob on the map proves this policy is moving the needle.
Of course nothing about the project is as simple as the contractors promise, but after a month, we're almost there.
Here's the main unit and its mini-split sidekicks. Doesn't look like much, but we're doing our part to get closer to all electric. Now if Massachusetts can just get the offshore wind farms underway ...
Tuesday, October 10, 2023
Making a big difference where even a little helps a lot
The Nicaraguan town of Comoapa is only a couple of hours drive from the capital city of Managua, but you don't have to look far to see that many of the benefits of modern life are few and far between. Last week members of the board of the water and sanitation organization El Porvenir had the chance to see a tidbit of what our diligent local staff are accomplishing alongside the local people at one site.
We believe all people deserve clean water, safe sanitation, and the knowledge to sustain it for the generations to follow. We partner with the people of Nicaragua to build a better future for themselves through the sustainable development of Water, Sanitation, and Hygiene (WASH) education projects.
We also take it a step further with our watershed management program, which promotes water flow, increases food security, and reduces the impact of climate change.
Clean drinking water for all Nicaraguans—no matter how remote or how bad the road is—is at the core of everything we do, now and into the FUTURE.
Saturday, August 19, 2023
It's not just weather ... and contraction is happening
Thinking of a friend who lives in Baja, California and of so many others in southern California where a novel hurricane path is being cut as I write, here are some observations from our necessary national Cassandra and conscience, Bill McKibben:
... the number of places humans can safely live is now shrinking. Fast. The size of the board on which we can play the great game of human civilization is getting smaller. ... The story of human civilization has been steady expansion. Out of Africa into the surrounding continents. Out along the river corridors and ocean coasts as trade grew. Into new territory as we cut down forests or filled in swamps. But that steady expansion has now turned into a contraction. There are places it’s getting harder and harder to live, because it burns or floods. Or because the threat of fire and water is enough to drive up the price of insurance past the point where people can afford it.
... For a while we try to fight off this contraction—we have such wonderfully deep roots to the places where we came up. But eventually it’s too hot or too expensive—when you can’t grow food any more, for instance, you have to leave.
So far we’re mostly failing the tests of solidarity or generosity or justice that these migrations produce. The EU, for instance, has this year paid huge sums to the government of Tunisia in exchange for ‘border security,’ i.e., for warehousing Africans fleeing drought... But the size of this tide will eventually overwhelm any such effort, on that border or ours, or pretty much any other. Job one, of course, is to limit the rise in temperature so that fewer people have to flee: remember, at this point each extra tenth of a degree takes another 140 million humans out of what scientists call prime human habitat.
... along with new solar panels and new batteries, we need new/old ethics of solidarity. We’re going to have to settle the places that still work with creativity and grace; the idea that we can sprawl suburbs across our best remaining land is sillier all the time. Infill, densification, community—these are going to need to be our watchwords. Housing is, by this standard, a key environmental solution. Every-man-for-himself politics will have to yield to we’re-all-in-this-together; otherwise, it’s going to be far grimmer than it already is.
As usual, it comes down to solidarity -- among humankind and with all life we share the planet with.
Sunday, July 16, 2023
All is not lost ...
Hard as it is to believe in a season of fire and flood, heat waves and torrential rain, human-made magic is afoot.
Let's start with the paint man. I've been on a lot of roofs. I love this guy.
The paint’s properties are almost superheroic. It can make surfaces as much as eight degrees Fahrenheit cooler than ambient air temperatures at midday, and up to 19 degrees cooler at night, reducing temperatures inside buildings and decreasing air-conditioning needs by as much as 40 percent. It is cool to the touch, even under a blazing sun, Dr. Ruan said. Unlike air-conditioners, the paint doesn’t need any energy to work, and it doesn’t warm the outside air.
Renewables are coming. Via Kevin Drum:
The Rocky Mountain Institute released a report today forecasting that solar and wind are growing so fast and getting so cheap that they're now on track to produce 30% of all electricity by 2030 and upwards of 70-85% by 2050You don't have to take it from Drum, a semi-retired, former Mother Jones econ-pundit. Here's how our financial overlords at Goldman Sachs view the energy future.
And if you want more hope, read this long, deep future vision from the forgotten continent:
The Future of Human Civilisation is AfricanNow that's forward looking, just what we must learn to be in a season of unprecedented natural change, threat, and promise.
... the real story of Africa is about its vast future potential as a high-technology centre of sustainable civilisation. Africa holds the key not only to solving our biggest climate challenges, but to unprecedented clean energy abundance and economic prosperity. Moreover, this is a future that we are racing toward thanks to the economic dynamics of disruption. Of course, we aren’t racing fast enough – and if we don’t accelerate, we could lock in dangerous climate change with devastating consequences.
Thursday, June 01, 2023
Cognitive dissonance
Driving on the freeway yesterday, I mused that hardly any of the vehicles whipping by looked much like Wowser, our very lime green 2011 Ford Escape. They seemed to all be various sorts of shiny aerodynamic semi-SUVs, Teslas (this is NorCal, after all), and undifferentiated white, gray, and black pill boxes. Wowser, which runs just fine, must be getting old.
Apparently not so; she's just average. Via Matt Yglesias, I discover that S&P Global Mobility calculates that the average car in the US is 12.2 years old!This is the fifth straight year the average vehicle age in the US has risen. This year's average age marks another all-time high for the average age even as the vehicle fleet recovered, growing by 3.5 million units in the past year. ...
... The global microchip shortage, combined with associated supply chain and inventory challenges, are the primary factors pushing US average vehicle age higher, according to the analysis.... The ongoing effect of supply chain constraints has led to a decrease in vehicle scrappage, which measures the number of vehicles leaving the vehicle population and has been a catalyst for the rise in average age over time.
... Additionally, the pandemic drove consumers from public transport and shared mobility to personal mobility and since vehicle owners couldn't upgrade their existing vehicles due to bottlenecks in the supply of new vehicles, the demand for used cars accelerated - boosting vehicle average age further.
Where are all those other aging cars? I sure don't see them. We'll being keeping Wowser for the foreseeable future. I suspect we're different around here.
• • •
Something similar goes for the city of San Francisco these days. With downtown emptied out by the shift to remote work and tech downsizing, there's more than a bit of a pall over the city. The current configuration was built for different uses and the residue of the last boom is no longer serving us ... including the political leadership as well as the built environment.
So we have people living on the streets, as well as bad drugs most everywhere. And seem unable to envision a better day.
It's worth recalling, we've been here before. I am not at all convinced that this is not just another one of San Francisco's boom/bust cycles. A dramatic one. A deep one. But this place revives.
Owen Thomas puts it well in another improbable city survivor, the San Francisco Examiner:
The million-dollar views from The City’s hillside open spaces are free. And what they offer is perspective: This is a place worth fighting for — and fighting about. We don’t have to come to some complete concurrence about San Francisco’s future to agree that it has one.
Wednesday, May 31, 2023
Doing what needs to be done
This is a very impressive snippet of visual story telling. And it's a hopeful story!
I could give you a nice, grown-up set of charts about how renewable energy sources are out competing polluting fossil fuels. But this is more fun.