Jeffrey Sachs, Columbia University professor and "Building the New American Economy," author talks about practical solutions to building a smart, fair and sustainable American economy. » Subscribe to CNBC: cnb.cx/SubscribeCNBC About CNBC: From 'Wall Street' to 'Main Street' to award winning original documentaries and Reality TV series, CNBC has you covered. Experience special sneak peeks of your favorite shows, exclusive video and more. Connect with CNBC News Online Get the latest news: www.cnbc.com/ Find CNBC News on Facebook: cnb.cx/LikeCNBC Follow CNBC News on Twitter: cnb.cx/FollowCNBC Follow CNBC News on Google+: cnb.cx/PlusCNBC Follow CNBC News on Instagram: cnb.cx/InstagramCNBC President Donald Trump 'Dangerously Wrong' On Climate Change | Squawk Box | CNBC