stitched together a global, panable, zoomable planetary timelapse, like as you think of going into goog earth or google maps, but instead of it being one time period, it s an animated video of the planet. and it was fascinating when we did that, it s an animated video of the planet. because, for example, we re looking at las vegas growing, the stest growing city in the us. las vegas growing while lake mead shrinks. hmm that s interesng, isn t it? heres deforestation in bolivia. it wld be artistically beautiful if it weren t sad. right? this is the alberta tar sands. [audience responds] right? it s like we are locusts on the landscape, aren we? but there are beautiful things too, geologic features like here we re seeing the shifting sands of cape c beaches. so there s a kind of lycal quality there. so building that timelapse, we had to analyze five million satellite images. it was three quadrillion pixels. we ran it on 66,000 computers in parallel so that we could produce it. and we had it in a couple days. on a single computer, it would have taken 300 years. [audience responds] yeah. so we re