Documentaries for engineers [Resources_Reviews]

August is when many of us find ourselves ta king long trips to get to vacation destinations. Documentaries are a particularly good choice for travel viewing: Unlike with a specialeffects extravaganza, you're not losing out all that much on the experience by watching them on the small screen of a smartphone or tablet, and their 60- to 90-minute length won't eat up storage space. Here are three recommendations for recently-released-for-download documentaries that we think IEEE Spectrum readers will find interesting (all are available either directly from the filmmaker or from outlets like iTunes and Amazon).