tar sands oil
- Texans opposed to an oil pipeline?
- Tar sands blockade in Texas and Oklahoma unites land rights and environmental activists
- Keystone XL moves forward, from Oklahoma to Texas
- Keystone XL pipeline: Myths v. Reality
- Environmentalists praise Obama’s decision to review Keystone pipeline route
- Obama: Please don’t permit Keystone XL
- Keystone XL: An environmental threat or an oil security blanket?