It looks like visits to the linked URL are blocked when the referrer isn't an MIT page. If you visit the authors' home page you can view the original article:

https://alum.mit.edu/pages/sliceofmit/author/hoagland/

EDIT: Duh. You can't click that link because it's blocked by referrer again. So just copy/paste that URL into your browser and you'll be all set. In fact, you can do the same with the original link: https://alum.mit.edu/pages/sliceofmit/2014/04/09/why-is-spee...