#1675: fifth-avenue, marine, basemap
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With this public domain remix you can compare photos from the "1911 Fifth Avenue from Start to Finish" collection with 2015 Google Street View images for a virtual walk through Manhattan
http://publicdomain.nypl.org/fifth-avenue/ -
Almost real-time information (approximately a two-day delay) on where marine heat waves (MHW) and periods of sea cold (MCS) occur and what category they are in, with a historical record since 1982
http://www.marineheatwaves.org/tracker.html -
Daylight is a complete distribution of open and global base map available for free with the support of community cartographers and professionals, in a Facebook initiative
https://daylightmap.org/
Raf