Almost a third of drivers have admitted momentarily nodding off at the wheel, according to a survey.

SCIENTISTS marvelled at crisp photographs of the surface of Mars while the NASA rover that snapped them switched from black-and-white to colour as it continued to send back images of the pancake-flat plain where it landed.

Scientists marvelled at crisp photographs of the surface of Mars while the NASA rover that took them switched from black-and-white to colour as it continued to send back images of the pancake-flat plain where it landed.