September 1st, 2011


Old S.F., An Interactive Map of 16,000 San Francisco Photos Since 1850

Old S.F. is an interactive map of 16,000 geotagged photos of San Francisco from the time period 1850 to 2000. The photos are sourced from the San Francisco Public Library’s Historical Photograph Collection, which includes some 40,000 photos. Old S. F. was created by Dan Vanderkam and Raven Keller.

Reblogged from Dataviz by Sunlight
April 20th, 2011

150 years of California earthquakes

Earthquakes in California have been recorded since at least 1769, when an estimated magnitude 6.0 earthquake struck in the Los Angeles Basin. Since the mid-1800s, quakes have been much more systematically logged. This map shows the locations and magnitudes of 189 earthquakes that registered at least 5.0 in California or just offshore since 1865.

Loading tweets...


California Watch, the largest investigative journalism team operating in the state, was launched in 2009 by the nonprofit, nonpartisan Center for Investigative Reporting. Areas of coverage include education, health and welfare, public safety, the environment and the influence of money on the political and regulatory process.