AAAAARGH.

finding_data

~ $ curl -I http://gdex.cr.usgs.gov/gdex/
HTTP/1.1 503 Service Unavailable
Connection: Close
Content-Type: text/html

~ $ curl -I http://www.add.scar.org
curl: (7) couldn't connect to host

~ $ curl -I https://lta.cr.usgs.gov/GTOPO30
curl: (35) error:14077458:SSL routines:SSL23_GET_SERVER_HELLO:reason(1112)

~ $ curl --silent "http://www.usgs.gov/?cx=005083607223377578371%3Ab5ixbbpqpx0&cof=FORID%3A11&q=GTOPO30&as_oq=site%3Alta.cr.usgs.gov&sa=Go" | grep Federal
      <p>Due to the Federal government shutdown, usgs.gov and most associated web sites are unavailable.</p>