USGS / Recent earthquakes feed (past hour, day, week or month)

USGS real-time summary feed, updated every minute: significant earthquakes, or those above magnitude 4.5, 2.5 or 1.0, over the past hour, day, week or month, as a GeoJSON feature list (same fields as usgs-earthquake-search). The all-magnitude week and month feeds are left out (several MB). Free. Credit: U.S. Geological Survey. USGS data is in the U.S. public domain.