Time lapses of Earth powered by community science.
Used by organizations worldwide to monitor the environment and inspire stewardship.
Featured chronologs
45
US States
100k+
Photo submissions
600+
Active chronologs
How Chronolog Works
Organizations set up a chronolog photo station.
A passerby aligns their phone, snaps a photo, and emails it to chronolog.
Their photo is automatically added to the right chronolog time lapse.
Chronologs engage your community and record environmental change.
What are chronologs monitoring?
Recent Photo Submissions
Apr 03, 2025
Photo added to #WoolseyFire15, Santa Monica Mountains National Recreation Area, California, US
Monitor the environment.
Engage your community.
Info for Organizers
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Chronolog is a monitoring tool for parks, nature centers, wildlife organizations, schools, and museums worldwide. With over 100,000 contributors across 300 organizations, Chronolog is on a mission to engage communities with nature while recording important natural changes.
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