Marissa Heffernan

@marissaheffernan · Policy Pickup · Substack profile · Climate & Environment

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Marissa Heffernan has 562 followers on Substack as of Nov 1, 2026. 5 publications recommend them.

Followers read 6 days ago

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: 562; read Nov 1
Last 7 days: first number on Nov 7
Last 30 days: first number on Nov 30
Subscribers: 555; rounded by Substack
Paid subscribers: none shown
Recommended by: 5; none new in 30 days
Recommends: 0
Bestsellers rank: not on a board

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.

One reading a day, the last of the day. Marked: leaderboard steps (into the top 25, top 10, or #1). Followers are people who follow Marissa Heffernan on Substack; they aren't email subscribers.

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Daily readings
Date	Followers	Change	Subscribers	Paid band
Nov 1, 2026	562	+4	555
Oct 31, 2026	558		551

Leaderboard positions

Not on a category leaderboard right now

Substack's boards list the top 100 per category, by paid subscribers (Bestsellers) and by recent paid growth (Rising). I read all 66 of them once a day, so a new entry shows up within a day.

Recommendations

5 publications recommend Marissa Heffernan. Lists read Oct 31.

The 5 largest publications on each side, by followers. Bigger dot, more followers. Orange: started in the last 30 days. Gray dots: publications I don't track, so no follower count.

When the recommendations started

Live recommendations by the month each began, using Substack's own start date. Removed ones aren't listed by Substack, so they don't appear.

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Recommendations started per month
Month	Started
2025-06	1
2026-05	2
2026-09	2

Recommended by

Zero Waste Ithaca Dispatch started Sep 7, 2026
BYO - US Reduces Newsletterstarted Sep 7, 2026
Linda P.started May 27, 2026
Stefanie's Substackstarted May 5, 2026
Dianne’s Substackstarted Jun 2025

Recommends

Marissa Heffernan doesn't recommend anyone.

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.

Who recommends writers like this one

Publications that recommend at least two other Climate & Environment writers with under 1,000 followers (53 writers in that group), but not Marissa Heffernan.

The Intellectual Investor
recommends 6 of them