It's conservationist against conservationist as those that care most about biodiversity and wilderness argue over the best way to manage and protect what little we have left.
There are a lot of unknowns about the ecological effects of ocean-based renewable energy. A screwy permitting process, a new analysis argues, makes answering those questions that much harder.
Talk about global warming quickly turns to the question of carbon in the atmosphere. But the more fundamental observation about how much sunshine the planet bounces back into space should probably precede any mention of greenhouse gases.