Why not take a break from the fire hose of Twitter and RSS and check out our weekly roundup of essential writing from around the web about technology, culture, media, and the future? Sure, its one more thing you can feel guilty about sitting in your Instapaper queue, but its better than pulling in vain on your Twitter list again. Adam Ransley and David Brown tell the chilling story of backpack tactical nukes that the US tested during the Cold War.