Donnie Campbell and Andrew Murray high in the Namib Dunes. Photograph: Johnny Graham, DigitalPict Photography

There is no doubt that ultra-running medic Andrew Murray is up for a challenge. The doctor has completed an ultra-marathon on each continent in seven (...)

HP chief executive Meg Whitman. photograph: justin sullivan/getty images

In a keynote address that emphasised her company’s innovation “DNA” – and which veered between discussions of 3D printing and the cloud to a video of (...)