r/biology (about 5.5M members, directory rank #159) discusses all things biology. Broader scientific research news and open science Q&A each fit better when the question is not biology-specific.
How to choose
Stay on biology for biology topics and field discussion. Use science for multi-discipline research news, and askscience when you want a science question answered rather than biology community talk.
Starting point: r/biology
r/biology
— Biology
- Members: 5.5M
- Directory rank: #159
- 7-day growth: +440
A place to discuss all things biology! We welcome people and content from all related fields.
Curated alternatives
Reddit Science
- Members: 34.6M
- Directory rank: #11
When to choose it: Latest research across astronomy, biology and more.
Why it is here: Public description: This community is a place to share and discuss new scientific research. Read about the latest advances in astronomy, biology, medicine, physics, social science, and more. Find and (about 34.6M members, rank #11). Listed as related to biology.
How it differs from r/biology: Multi-field science hub versus biology-focused room.
AskScience: Got Questions? Get Answers.
- Members: 26.4M
- Directory rank: #20
When to choose it: Ask a science question, get a science answer.
Why it is here: Public description: Ask a science question, get a science answer. (about 26.4M members, rank #20). Q&A format rather than biology community posts.
How it differs from r/biology: Science Q&A versus biology discussion hub.
Related comparisons
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Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-02 UTC); 7-day growth measured from 2026-10-26. Posts/day and culture claims appear only when we have them — missing fields stay n/a. Directory rank is listing order. Communities outside the published Top 100 open in the info tool instead of a full community page. Guide updated 2026-11-07.