Trayvon Martin is dead, and his killer is walking free. The injustice of the situation is both palpable and maddening. It is clear that had George Zimmerman not acted as an armed vigilante almost a year and a half ago, Trayvon Martin would still be alive. It was Zimmerman who took it upon himself…

Recent news stories have revealed the breathtaking scope of President Obama's indiscriminate spying on American citizens who aren't suspected of any wrongdoing. The government has been using data from Microsoft, Yahoo, Google, Facebook, PalTalk, AOL, Skype, YouTube, Apple, to spy Americans. There…

"Essentially game over" for the climate. That's what climate scientist James Hanson calls the proposed Keystone XL pipeline — which would carry oil out of Canada's vast tar sands oil fields to Texas, where it will be refined, then burned across the globe, dealing a catastrophic blow to our chance…

Americans count on the Environmental Protection Agency to identify the largest threats to clean air and clean water, and act to make sure they are protected. But thanks to the work of Vice President Dick Cheney's secretive energy task force, since 2005, the EPA has been handcuffed from doing…