#1283: trees, permafrost, mooc
, last check: Tue, 05 May 2026. Post history
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trees
OpenTrees is the biggest database of urban trees sourced by Open Data, written as Open Source and revamped in 2020
https://opentrees.org/ -
permafrost
The broad arctic irreversible permafrost thawing is accelerating and has a significant impact on ecology, hydrology, and soon also the weather
https://canadiangeographic.ca/articles/arctic-permafrost-thawing-heres-what-means-canadas-north-and-world -
mooc
"CartographyMOOC" with data, exercises, and videos is now freely available
via @John_M_Nelson
https://carto.maps.arcgis.com/home/item.html?id=56dbe11c85084faa97de0844a770c8f7
Raf