Sorry to be that guy, but it would be great if that left hand nav would auto collapse into a hamburger button on mobile. It's taking up sooooo much space, and it shrinks the content to the point where it's unreadable.
The horizontally-flowing layout is problematic overall, but placing that "Explore Data" button much higher in the right-most column would be a decent compromise: http://imgur.com/a/lS7ks