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/2450" allowfullscreen></iframe> On ABC's "World News with Charles Gibson," Dan Harris reported that if people gave up beef, they could help reduce global warming.
