Randy Shaw: Successful movements must be flexible enough to change tactics in the face of roadblocks, and activists’ camping in public spaces is not strategically necessary for the Occupy movement’s success.
The first two decades of human spaceflight were a spectacular success. But it has been downhill since then, writes historian Jonathan Coopersmith. As we mark the fiftieth anniversary of the first manned spaceflight, we need a revival of serious government support for the space program.
Carole Bartolotto: The problem with concluding that GMOs are safe is that the argument for their safety rests solely on animal studies. These studies are offered as evidence that the debate over GMOs is over. Nothing could be further from the truth.
Winona LaDuke: With Keystone XL still delayed, Alberta Clipper is widely seen as the most important and immediate pipeline battle, and thus much of the U.S. tar sands campaign has been shifting its focus to this project.