Green news harvest: Climate bill scorecard, Bill Gates bails on ethanol

The Renewable Energy Business Network expands; there's a call for a moratorium on ocean iron fertilization; biomass attracts some more bucks; and Matt Damon hearts Tesla.

Here's a sampling of the latest green-tech news, along with quick commentary.

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Apple TV stretches Siri voice search in beta update

A developer preview of an Apple TV software update reveals new perks. Meanwhile, Twitter puts video ads on top of your feed and assembles a new troll-fighting task force.

by Bridget Carey