INTERPOLATION MAP / Lionel Bergeret, Safecast / CC BY-NC

One week after the nuclear disaster at the Fukushima Diachi plant in March, the Safecast project was born to respond to the information needs of Japanese citizens regarding radiation levels in their environment. Safecast, then known as RDTN.org, started a campaign on Kickstarter “to provide an aggregate feed of nuclear radiation data from governmental, non-governmental and citizen-scientist sources.” All radiation data collected via the project would be dedicated to the public domain using CC0, “available to everyone, including scientists and nuclear experts who can provide context for lay people.” Since then, more than 1.25 million data points have been collected and shared; Safecast has been featured on PBS Newshour; and the project aims to expand its scope to mapping the rest of the world.

“Safecast supports the idea that more data – freely available data – is better. Our goal is not to single out any individual source of data as untrustworthy, but rather to contribute to the existing measurement data and make it more robust. Multiple sources of data are always better and more accurate when aggregated.

While Japan and radiation is the primary focus of the moment, this work has made us aware of a need for more environmental data on a global level and the longterm work that Safecast engages in will address these needs. Safecast is based in the US but is currently focused on outreach efforts in Japan. Our team includes contributors from around the world.”

To learn more, visit http://safecast.org. All raw data from the project is available for re-use via the CC0 public domain dedication, while other website content (such as photos and text) are available under CC BY-NC.

The idea is to post a tweet to Twitter letting @tweetCC know that what license (or waiver, in the case of CC Zero) you want your feed to be under, and then the service keeps track of your choice for the rest of the web’s reference. Users can also look up whether and how a given Twitter user has chosen to license their feed. Right now, our Public Domain Dedication is the default and thereby most popular choice, but take a look at the rest of our licenses offered on the site, and CC license your twitter feed today!