Dr Alan Johnson, of the Public Health Laboratory Service's antibiotic resistance monitoring and reference laboratory, said the study confirmed data from previous research.

BBC: Nursery

Nasa will be monitoring the drama from the Jet Propulsion Laboratory (JPL) in Pasadena, California.

BBC: Nasa's Curiosity Mars rover set for high risk landing

Psychologist Chris Dzikowski, the centre's director, said after monitoring Morris's sleep patterns in the laboratory, he found the features displayed were consistent with sleepwalking.

BBC: Simon Morris

Grid Friendly Appliance Controller: Developed at the Pacific Northwest energy Laboratory, the Grid Friendly Appliance controller senses grid conditions by monitoring the frequency of the system and provides automatic demand response in times of disruption.

FORBES: You Could Be the Next 'American (Geek) Idol'

"A dust-devil looks essentially like what you would expect from the movies - a tiny tornado that is lifting dust, " explained Manuel de la Torre Juarez of Nasa's Jet Propulsion Laboratory (JPL) and a scientist on the Rover Environmental Monitoring Station (Rems) instrument.

BBC: Dust-devils flirt with Curiosity Mars rover