This weekly Snippets column is a collection of short items: responses to posted articles, practical self-sufficiency items, how-tos, lessons learned, tips and tricks, and news items — both from readers and from SurvivalBlog’s editors. Note that we may select some long e-mails for posting as separate letters. — Scientists design super-battery made with cheap, readily affordable chemical element, Na — Salt-based cell has surprisingly good energy density and charges in seconds. o  o  o Over at the great Rural Revolution blog: Poliphobia? o  o  o Reader R.K. suggested a DIY YouTube page called Invention Incarnate that includes these two interesting … The post SurvivalBlog Readers’ & Editors’ Snippets appeared first on SurvivalBlog.com.