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Zinc batteries that offer an alternative to lithium just got a big boost
(www.technologyreview.com)
This is a most excellent place for technology news and articles.
One of those X's was actually a Twitter logo. Fucking thing gets me all the time...
I remember when at my 2-4 grade school my teachers talked about "x-ing" out of programs and applications on a computer instead of closing. Something like this would be a surprise.