Dr Baccini's group is not the only one to have used GLAS data in this way.

ECONOMIST: Monitoring forests: Seeing the world for the trees | The

The traditional Welsh varieties of apple the children will be growing include Afal Pig Aderyn, Afal Pren Glas, and Marged Nicolas.

BBC: Orchard plans for Welsh school children

Glas Cymru's proposals will cut Welsh Water's cost of capital, its single biggest cost (accounting for a third of customers' bills).

ECONOMIST: Great age

Those future estimates will not be able to use new GLAS data.

ECONOMIST: Monitoring forests: Seeing the world for the trees | The

The new Google Glas start page includes the video above, titled How It Feels, and a description of What It Does.

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The January issue of the North Wales Police newsletter Y Glas features a warning that using 999 for non-urgent calls puts lives at risk.

BBC: Helicopter over Snowdonia

Nearly 50 rescuers were out until early on Saturday after Mr McGrath's fall from Bwlch Glas, but could not retrieve his body because of bad weather.

BBC: Donal McGrath was a very experienced climber

Dwr Cymru Welsh Water said the dispute also dated to a time before the utility had been acquired by Glas Cymru and set-up in its current form, as a not-for-profit company.

BBC: Shotton paper mill

GLAS's main job was measuring the height of ice sheets, but the data that came back from forested areas contain a lot of information about the height of the canopy and the density of the vegetation there.

ECONOMIST: Monitoring forests: Seeing the world for the trees | The

To calculate this, the team took data from patches of forest studied on the ground, in which every tree's diameter has been recorded, and combined them with images from MODIS and with data from an instrument called GLAS, which bounced laser beams off the Earth's surface between 2003 and 2009.

ECONOMIST: Monitoring forests: Seeing the world for the trees | The