To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/138785" allowfullscreen></iframe> In his weekly broadcast, President Obama put climate change at the forefront of his trip this week to Alaska, which will include the first visit by a sitting president to a location north of the Arctic Circle.