Peter Kalmus has 7,884 followers on Substack as of Nov 1, 2026. On the latest board read, Nov 6, 2026, they were #55 on Substack's Climate & Environment Bestsellers board. 46 publications recommend them, 2 of them new in the last 30 days, and they recommend 1.
Last read Nov 1, 2026 (UTC). Followers are not email subscribers. Substack lists only the newest 50 recommendations for each publication, so a recommender count of 50 or more is a floor. History starts Oct 31, 2026; Substack publishes nothing earlier.
- Followers
- 7,884
- read Nov 1
- Last 7 days
- first number on Nov 7
- Last 30 days
- first number on Nov 30
- Subscribers
- 5K+
- rounded by Substack
- Paid subscribers
- 100+
- bestseller badge 100+
- Recommended by
- 46
- +2 in 30 days
- Recommends
- 1
- Bestsellers rank
- #55
- Climate & Environment
Followers by day
Tracking since Oct 31, 2026. 2 days of readings. Substack doesn't publish past follower counts, so history starts the day I first read a writer and grows by one reading every 3 days (daily if it's on your watchlist). The 7-day change appears on Nov 7, the 30-day change on Nov 30. Recommendation dates below go further back: they're Substack's own.
Show as a table
| Date | Followers | Change | Subscribers | Paid band |
|---|---|---|---|---|
| Nov 1, 2026 | 7,884 | +2 | 5K+ | |
| Oct 31, 2026 | 7,882 | 5K+ |
Leaderboard positions
| Board | Rank now | Best on record | Reads on it |
|---|---|---|---|
| Climate & Environment Bestsellers | #55 | #55 | 4 of 4 |
Rank on each read
| Writer | Oct 3107:00 | Oct 3113:00 | Oct 3119:47 | Nov 621:50 | Move |
|---|---|---|---|---|---|
| Climate & Environment Bestsellers | 56 | 56 | 56 | 55 | ▲1 |
I read every board once a day.
Recommendations
46 publications recommend Peter Kalmus; 2 started in the last 30 days. Peter Kalmus recommends 1, and 1 of those recommend back. Lists read Oct 31.
When the recommendations started
Show as a table
| Month | Started |
|---|---|
| 2025-01 | 2 |
| 2025-03 | 5 |
| 2025-04 | 3 |
| 2025-05 | 7 |
| 2025-07 | 3 |
| 2025-08 | 3 |
| 2025-10 | 3 |
| 2025-11 | 2 |
| 2025-12 | 1 |
| 2026-02 | 1 |
| 2026-04 | 1 |
| 2026-06 | 8 |
| 2026-07 | 3 |
| 2026-08 | 1 |
| 2026-09 | 1 |
| 2026-10 | 2 |
Recommended by
Katharine Hayhoe69k followers · started May 2025
Steven Donziger17k followers · started May 2025 · mutual- Roy's Substackstarted Oct 20, 2026new
- Victoria Carterstarted Oct 15, 2026new
- Count Everything YouTubestarted Sep 18, 2026
- Saverio Colasantostarted Aug 14, 2026
- Natasha's Substackstarted Jul 3, 2026
- This Incarnate Lifestarted Jul 2, 2026
- The Icarianstarted Jul 1, 2026
- Colin’s Substackstarted Jun 22, 2026
- Citizen 99started Jun 14, 2026
- "To be clear..."started Jun 11, 2026
- Thomas Boettcherstarted Jun 11, 2026
- FSHH: Homo Synthesisstarted Jun 11, 2026
- Ronstarted Jun 10, 2026
- Jacquie's Substackstarted Jun 10, 2026
- lowly snailstarted Jun 10, 2026
- Climate Junction - Which Direction?started Apr 10, 2026
- The Climate Casinostarted Feb 10, 2026
- Andy’s Substackstarted Dec 3, 2025
- Substack von Katjastarted Nov 14, 2025
- Jean's Substackstarted Nov 13, 2025
- Jamie's Substackstarted Oct 2025
- ... but I digressstarted Oct 2025
All 46
- Patricia Scottstarted Oct 2025
- Ketaki Kuntestarted Aug 2025
- Nalini’s Substackstarted Aug 2025
- Msx07started Aug 2025
- Our New Reality The Plasticenestarted Jul 2025
- Jane DNstarted Jul 2025
- Prison Notebookstarted Jul 2025
- Annie Wildstarted May 2025
- Johnstarted May 2025
- More Vibrant Planetstarted May 2025
- Anthropocene Civil Servicestarted May 2025
- Dale Laturestarted May 2025
- Yuanjun Publicationstarted Apr 2025
- laurenstarted Apr 2025
- Bridgesstarted Apr 2025
- Before It's Over - In the StoryGlassstarted Mar 2025
- Anna B. Martinstarted Mar 2025
- Leslie’s Substackstarted Mar 2025
- Nina Newingtonstarted Mar 2025
- Betsy’s Substackstarted Mar 2025
- Anne Halloranstarted Jan 2025
- Changing language in the #climatecrisisstarted Jan 2025
Recommends
- Steven Donziger17k followers · started May 2025 · mutual
Substack lists the 50 newest recommenders of each publication. I add every recommendation found in the full lists of the 6,392 publications I read, so writers with many recommenders may still be missing a few small ones. "Started" is Substack's date.
Recommended by the same publications
Writers who share the most recommenders with Peter Kalmus. Useful for finding peers, and for sponsors looking for similar audiences.
- 3 shared
Sam Matey-CosteThe Weekly Anthropocene
39k followers - 2 shared
Britt WrayUnthinkable
36k followers - 2 shared
Steven DonzigerDonziger On Justice
17k followers - 2 shared
Ben Lockwood, Ph.D.Brief Ecology
12k followers - 2 shared
Last Week in Collapse@lastweekincollapse
8.4k followers - 2 shared
Seth KleinSeth Klein / Emergency Measures
7k followers - 2 shared
Guy R McPhersonNature Bats Last Substack
2.8k followers
Who recommends writers like this one
Publications that recommend at least two other Climate & Environment writers with 5,000 to 10,000 followers (38 writers in that group), but not Peter Kalmus.
- recommends 7 of themThe Intellectual Investor
- recommends 4 of them
Jonathan P. Thompson@landdesk - recommends 3 of them
Bill McKibben@billmckibben - recommends 2 of them
Our Public Lands & Waters@ourpubliclandsandwaters - recommends 2 of them
More Than Just Parks@morethanjustparks - recommends 2 of them
Jason Anthony@jasonanthony - recommends 2 of them
Sammy Roth@climatecoloredgoggles - recommends 2 of them
Miranda Green@mirandagreen - recommends 2 of them
California Curated@californiacurated - recommends 2 of themThe Think Wildlife Podcast
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