INTERVIEW At a time when other public officials and the media are talking less about climate change, Sheldon Whitehouse remains fiercely outspoken. He delivered his 307th climate speech on the Senate floor this month and is pushing back against the recent trend of “climate hushing.” For the last 15 years, Senator Sheldon Whitehouse, Democrat of Rhode Island, has been Congress’s most outspoken member on climate change. In 2012, he had a sign made up that showed the Earth as seen from space. “Time to Wake Up,” it said. The sign became a prop for a series of speeches the senator delivered on the urgency of the climate crisis. Not long ago, Whitehouse gave his 307th “Time to Wake Up” speech on the Senate floor.  Over the last few months, Whitehouse has been speaking out against the notion that Democrats shouldn’t talk about climate change ahead of the midterm elections.…