By the Numbers
by Hannah Ritchie
Using data and research to understand what really makes a difference
Free subscribers
~75k
Est. revenue
—
Last 30 days
Strong growth
Public estimates are rounded ranges, not exact figures. Paid plans include precise metrics, history charts, sponsor intel, and exports. Last updated Jul 27, 2026.
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Every Friday: breakout publications, revenue milestones, and what moved in the Substack economy. No account required.
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Upgrade for subscriber history charts, sponsor details, cross-publication search, exports, and alerts. Public pages show rounded estimates only. Developers: MCP setup · Agent ($79/mo) includes MCP API access for Cursor and other AI tools.
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