Cool Stuff We Stole
Map tiles by Stamen Design (stamen.com), under CC BY 3.0 (creativecommons.org/licenses/by/3.0).
Map tile data by OpenStreetMap (openstreetmap.org), under CC BY-SA (creativecommons.org/licenses/by-sa/3.0).
Places from OpenStreetMap and contributers, licensed under the ODbL (opendatacommons.org/licenses/odbl).
Map display is powered by Leaflet (leafletjs.com), copyright (c) 2010-2016, Vladimir Agafonkin and copyright (c) 2010-2011, CloudMade. BSD 2-clause license.
Terrain information for the United States from the MRLC National Land Cover Database 2011 (mrlc.gov).
Weather data Powered by Forecast (forecast.io).
Geocache data from the OpenCaching.US OKAPI. Data licensed under the CC BY-NC-SA 2.5 (creativecommons.org/licenses/by-nc-sa/2.5).
If you're a developer, you might be interested in this: earth.apis.netsyms.net