The trial geoengineering project, dubbed one of the "world's biggest ice-making experiments," is scheduled to begin later this month, the Guardian newspaper reported on its website.

No other tech specialist seems to have heard about the project though, and when the Guardian asked Google's UK office for a comment, it answered: "We don't comment on rumour and speculation."

Thanks to mobile developer Nathan Freitas and the teams behind Tor and the Guardian Project, secure, anonymous mobile browsing is on its way.