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Your underground home on Mars (pictures)

More and more people are pushing to establish a colony on Mars, but just how will people live there? Here's an unusual concept for an underground cave dwelling.

6 Images By Sep. 17, 2013


Underground explorers

Feb. 20, 2012


Free London Underground Wi-Fi for O2 customers

O2 has joined forces with EE, Virgin Media and Vodafone to tempt its customers with free Wi-Fi on the Tube.

By Apr. 8, 2013


O2 down the Tube with free underground Wi-Fi on 22 July

O2 has joined Virgin Media, Vodafone and EE in offering free Wi-Fi on the London Underground from 22 July.

By Jul. 2, 2013


London Underground 150th birthday celebrated by Google

Mind the gap -- it's the 150th anniversary of the London Underground, and Google is celebrating with a totally tubular doodle.

By Jan. 9, 2013


Apple planning underground auditorium in new campus

The plans for Apple's new campus have leaked, and there's a huge auditorium in the basement.

By Jun. 9, 2012


Underground explorer online community celebrated in video

We discover Churchill's secret Second World War bunker with underground explorers Subterranea Britannica in this video.

By Feb. 20, 2012


Cogeneration goes underground for efficiency (images)

The Kendall Station, a fixture on the skyline near Boston, is an efficient combined heat and power plant that's tapping district heating to improve efficiency more than 90 percent.

8 Images By Jun. 21, 2011