“Scientists discover the Earth is surrounded by a 'bubble' of live bacteria - at 33 000 feet” - http://t.co/V7UYtFBFHT Woah. June 20, 2013 · aside , tweet “Scientists discover the Earth is surrounded by a ‘bubble’ of live bacteria - at 33 000 feet” - http://t.co/V7UYtFBFHT Woah. Tags: #Tweet