A playful look at a serious subject from Mike Bostock. He uses a small multiple, animated over each year, to show the impact and context of this year’s drought in the US. Click the image to see the animation (it might take a little while to load).
The colour scheme and layout are great here. Being picky, I’d like to see a little more information on the page about the numbers that the colours relate to. It would also be great if you could pause the animation at a particular month.