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If you want to donate to fight climate change, what’s the best way to spend your money?
For the past five years, Giving Green has been trying to find out. Each year, the nonprofit recommends a set of nonprofits that are trying to solve the climate problem effectively and efficiently, and get the world closer to decarbonization.
Giving Green, in other words, is somewhat like the climate-specific version of Givewell, an uber-utilitarian group that identifies which global charities maximize the number of lives saved per dollar spent. But it’s much more difficult— or at least much less clear — to identify which nonprofits might best fight climate change than it is which nonprofits might save the most lives through targeted interventions.
Climate change is a globe-spanning sociotechnical problem, a political quandary baked into humanity’s largest-scale engineering systems. Even when a government or technology has seemingly pushed the world forward, it can be unclear why the improvement happened, or whether, in the long run, it will make a meaningful difference. The Paris Agreement, after all, has been around for nearly a decade, the European Union’s cap-and-trade scheme for nearly two. Yet academics, experts, and politicians can (and do) disagree about whether either policy has ultimately helped — and even why they happened in the first place.
To resolve this problem, Giving Green reviews the historical record to identify philanthropic strategies that seem like they have a good shot of leading to emissions reductions. This year, it has focused on eight, including next-generation geothermal, decarbonizing aviation and marine shipping, advancing nuclear energy, and speeding the energy transition in low- and middle-income countries. Then it looks for groups that are working on those problems in time-proven ways.
I spoke with Daniel Stein, Giving Green’s director, earlier this week. Our interview has been edited and condensed for readability.
What is Giving Green’s goal with these recommendations?
The main goal — the problem we are trying to solve — is that we believe that there are lots of people who want to do something about climate, and there’s a lot of money that’s paralyzed by indecision and sits on the sidelines. So we provide a comprehensively researched guide with a systematic approach to try and determine where the high leverage points are in climate philanthropy — and by high-leverage, I’m thinking most greenhouse gas reductions per dollar.
We focus in on what we call philanthropic strategies, specific things that people could be doing. Then we find organizations working on those strategies that are doing a great job and promote them.
Can you tell me about a few of the organizations that you have chosen?
We have some that we’ve recommended for a few years, such as Clean Air Task Force. Last year, one of our big pushes was geothermal energy, and so we’ve recommended Project Innerspace, who are a big advocate for geothermal and work a lot with both private industry and the government.
Another big area of focus for us over the past few years has been heavy industry. The case for philanthropic support for heavy industry is really, really clear. Depending on what estimate you use, heavy industry accounts for roughly a quarter of carbon emissions, but something like less than 5% of philanthropic spending. There’s very little policy teeth almost anywhere in the world on industry, and basically nothing in the U.S., but there are pathways to solving it. We kind of know how to make green steel and green aluminum, and at least have ideas on concrete and plastic. There’s a lot nonprofits can do to pave the way forward in terms of: What does policy look like? How do we get from where we are today — where we kind of know the technology but no one’s using it — to a place where there’s actually supply and demand in the future? So our top recommendations for that is an organization called Industrious Labs in the U.S. and an organization called Future Cleantech Architects in Europe.
Over the past five years, I feel like I’ve seen your mission evolve and your strategies evolve. At the beginning, you recommended giving to a mix of high-end research and policy-development groups, and then also to more grassroots, movement-type groups. But over time, your set of recommendations have become much more focused on groups that are like CATF, that are providing nonpartisan, highly expert information and analysis.
I think that’s right, but it is not necessarily that we have just changed our mind on what works. I think different moments in time call for different approaches. And in those heady years leading up to the Inflation Reduction Act — where there was hope for a Democratic trifecta, and then it happened — there was a major opportunity for a left-driven, all-of-government push on climate. That was what we thought these grassroots groups were in a good position to push forward.
I think when you look back, you see groups like Sunrise having a really powerful influence. Obviously people disagree on what forces got the IRA to happen. But I really do think that you can draw a direct line from this progressive advocacy to the Democrats believing that they had to do something about climate to please their base.
But our view is that that moment has passed. Especially post-IRA, this opportunity for a more progressive-led legislative process has ended. Even if the Democrats were still in control, I think you weren’t going to get big bills like the IRA. We moved to a point where we need to focus on the wonky details of implementing these bills and then passing more technical, focused policy in the future. Our view is that in the U.S., the big opportunities have shifted to what we would call the “insider” groups. But I think that could change again, and it could change based on geography.
Are there any big climate strategies nobody is working on right now — where you identified a place where money could be spent, but you couldn’t find a nonprofit focused on it?
One of our high-level strategies is solar radiation management. That was something that was new for us this year. And within that, we would look at very specific substrategies. Should we be funding research? Should we be funding governance? And within those little sub-elements, we occasionally found stuff where we were like, wow, we really wish there was a group working on this, but we didn’t find anything.
But one of the nice things about having a [grant-making] fund this year, for the first time ever, is that we could help get things started that didn’t exist before. We’re super excited about industry, and so much industry is happening in developing countries. But when you ask, Who is focused on reducing steel emissions in Indonesia?, there were very few organizations. We made a grant to an organization called Climate Catalyst — they were already working on steel in India, and we helped them expand into emissions reduction in Indonesia.
I think some people might see your list and go, Wow, these are a bunch of high-end research and elite advocacy organizations, but what’s actually going to solve the climate crisis is local organizing. How would you reply to that?
I think that’s a reasonable point. We are open to all of these things, and we have considered them, and I think there is a time and place for grassroots approaches and activism. But looking at the historical research and our own research, I believe that the approaches that work on this are ones where the activism is tied to clear policy demands — that are good policies, that can have big, systematic decreases in emissions and seem to have some sort of feasible pathway to success.
What I’ve seen in a lot of grassroots movements in recent years are things like throwing soup at paintings, or blocking streets, which have not had this direct policy connection, and we are pretty skeptical of those approaches. But if grassroots approaches came on our radar that have a super viable theory of change to altering policy, we are very open.
This is the fifth year you’ve put out recommendations like this, right? What have you learned or changed your mind about during that time?
One of the things that’s really crystallized in our mind is that we really think the big levers are in systems. And that can mean a lot of things, but to us, it really means three things — it means policy, technology, and markets.
To solve the climate crisis, you need to change the rules of the game, such that everyday actors — people making decisions, businesses — everybody changes their behavior because some technology got cheaper, or some policy changed. We really use that to focus ourselves to think about, What are the big changes that need to happen, and how do we work backward to the actions that get us there?
So I think that might be why you see some of these more insider, techno-analysis-driven approaches. Because when you step back and you think, alright, we need this market to change in this way, or we need this technology to develop that doesn’t currently exist, and you think about how you get there, a lot of times you need advocacy to change policy, and you need research to make that policy change possible.
This year, Giving Green has recommended six top groups fighting climate change. They are:
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France’s deadliest heat wave since 2003 killed more than 2,700 people — and possibly as many as 5,700.
More than 5,700 excess deaths were recorded in France during this summer’s record-breaking heat wave, the country’s health agency announced today. That makes the event — which ran, by the official reckoning, from June 17 to July 2 — the country’s deadliest heat wave in more than 20 years.
That’s in line with other estimates we’ve heard. EuroMOMO, a network of European public health agencies that track excess mortality, found that the continent saw more than 10,000 excess deaths during the same period. Roughly 90% of those victims were older than 65, it said. (France’s cohort seems similar: Adults older than 75 made up about two-thirds of the victims, the government said.)
These numbers are staggering — and much larger than some astute Heatmap readers might anticipate. If you read my colleague Jeva Lange’s piece on why it’s so hard to estimate heat deaths last week, she cited a much smaller estimate: Roughly 2,700 died in France during the most recent heat wave. That tally came from Christopher Callahan, an Indiana University scientist who studies climate change’s economic and social costs.
Why is there such a gap between the figures? I emailed Callahan to find out. He shared a few thoughts. First, he uses a different (and theoretically more rigorous) method than the French government: “Our approach uses a statistical relationship between temperature and mortality to explicitly quantify how many additional deaths are associated with a given day’s temperature,” he wrote. “France’s report of excess deaths is just based on how many more people died in late June compared to previous Junes - but we don’t know if those people died because of the heat or some other factor.” (Carbon Brief recently published a Q&A on these varying approaches.)
That might mean his estimate is right, in which case France has misidentified roughly nearly 3,000 deaths. But it could also mean his model, which is trained on data from 2004 to 2019, is “missing something,” he said, like a post-Covid change to public health risk. Last year, Callahan and his colleagues used a similar model to estimate deaths from France’s worst-ever heatwave, a 2003 episode that overwhelmed morgues and killed about 16,000 people. Even 23 years ago, global warming helped make that disaster larger than it needed to be: Some 6,000 of those deaths were due to climate change, their paper found.
Either estimate of the 2026 heat wave, of course, is shattering. As Jeva wrote, even the lower figure would mean the 2026 heat wave killed as many people as died in three years of French homicides. But the divergence in estimates tells us something else too: Even as climate change breaks records and alters our world, we’re never going to quite agree on where it ends and normal randomness begins.
The AI data center boom does not seem close to ending. Google’s parent company, Alphabet, announced its second quarter results this evening, and it beat Wall Street’s expectations, nearly quadrupling its profit on a year-over-year basis. Among the drivers: Its cloud business grew 82% compared to the same quarter last year. (As I’ve written, that rapid growth is helping to turn Alphabet and other hyperscalers into light industrial firms.)
The company’s AI bets seem to be paying off so far — so Google is now planning on spending even more on data centers, energy infrastructure and AI development this year than it once anticipated. It raised its estimates of 2026 capital expenditure to $195 billion to $205 billion, which is above earlier projections and twice as much as it spent in the same category last year. 2027 could be even bigger, it signaled. The company’s shares fell slightly on the news in after-hours trading, but from an energy and climate wonk perspective, the message is clear: For now, the AI demand surge transforming the power sector — and the real economy — continues to chug along.