Ouch, this page absolutely destroys my browser (up-to-date Firefox on Windows 7.) 20 seconds of unresponsiveness on load, followed by very choppy scrolling and animation.
I love the visualizations, but I think the author needs to reconsider including the parallax trickery on inner pages. There is enough to look at, and, when it's not busy crashing your browser, this kind of eye candy is a distraction.
I agree about the parallax stuff, its great, but when you're sitting there waiting for your browser to come back alive it sort of puts you off visiting the site again
Renders almost correctly on Android Chrome on my Note3 (but the screen is a little cramped, so while the animation/transitions work, parts of the text is garbled/layered on top of other text).