The media conglomerate Discovery Communications used to be known for their earth-friendly offerings. But they’ve just paid millions to Sarah Palin to host a “nature” show, despite her decidedly anti-environmental stance: She vocally advocates for habitat-destroying oil drilling, she denies global warming is a human-caused threat, and she spearheaded a brutal wolf-slaughter program as governor of Alaska. It’s one thing if Fox News gives Sarah Palin a platform. But when Discovery Communications – home to the Discovery Channel, the "Planet Earth" series, the Science Channel, Animal Planet, and TreeHugger.com – gives a show to Sarah Palin, it undercuts everything the...