Jonathan Coopersmith: The Obama administration is discarding older NASA technologies in a quest for a new start. A historian of technology says that progress depends on finding ways to explore space at tolerable prices
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.