Science

Scientific datasets, research feeds and reference data.

Wikipedia REST
Wikimedia Foundation
Page summaries, media and on this day feed for every Wikipedia language.
no keyjson
NASA APOD
NASA
Astronomy picture of the day, with description and metadata.
apiKeyjson
USGS Earthquakes
United States Geological Survey
Live earthquake feed published by the USGS, GeoJSON formatted.
no keygeojson
arXiv
Cornell University
Preprint repository for physics, math, computer science and more.
no keyxml