Ideas Why the ‘Necessity Defense’ Is Crucial to the Climate Struggle Many Americans don't realize that breaking a law can sometimes be legally, as well as morally, permissible. Kelsey Skaggs
Environment Canadian Government Keeps Controversial Pipeline Project Alive The Canadian government announced plans Tuesday to buy a controversial pipeline that would carry oil from Alberta's tar sands to a port in Vancouver, the New York Times reports. Kate Wheeling
Environment With Keystone XL Dead, What’s Next for Tar Sands, Landowners, and All That Unused Pipe? It's the end of the line for the Keystone pipeline (probably), but not for battles over tar sands and climate. Brian Palmer
News in Brief Dividing a River Is Tough Business A new study finds that the Alberta government allows tar-sands companies to take dangerously high amounts of water from the Athabasca River. Francie Diep
Environment A New Source of Oil (for the 1920s) The Bowie-Gavin process of extracting oil (June 1927 issue of Science and Invention magazine) As a non-renewable resource,… Matt Novak