London, March 29 : University of Calgary researchers have announced the invention of a specially-equipped robot vacuum cleaner that can sense human emotions.

The scientists say that the Roomba robot vacuum cleaner uses a special headband to capture bioelectric signals from the forehead of a human user, and then infers stress from muscle tension readings.

The system involves a control software programme that reinterprets natural muscle tension as estimating the user''s stress level, they add.

London, March 29 : While U. S. President Barack Obama is gearing up for his first official overseas trips, it seems that the entire White House staff are preparing to fly with him.

Obama is all set to meet the Queen before joining 19 world leaders at the G20 summit on Thursday in London's Docklands. He and First Lady Michelle will later fly to France, Germany and the Czech Republic.

Accompanying them on these trips will be at least 500 officials, the back-up staff, and high-tech gadgetry.

London, Mar 29 : British scientists are on their way to provide double bonanza to women looking for boob-jobs: a stem cell therapy that offers "natural" breast enlargement - and cuts stomach or thigh fat in the process.

The treatment, which can enhance cup size, involves extracting stem cells from spare fat on the stomach or thighs and growing them in a woman's breasts.

London - Thousands of people from around the world gathered Saturday in London to stage a mass protest demonstration ahead of next week's Group of 20 (G20) summit in the British capital.

Braving cold and rainy weather the demonstrators were marching under the motto "Put People First" in a rally and carrying banners saying "Jobs, Justice and Climate."

More than 150 trade unions, peace activist groups and environmental protection organizations were behind the demo taking place in Hyde Park.

London, Mar 28 : The political stability in Pakistan depends upon President Asif Ali Zardari giving up his dictatorial presidential powers like power to dismiss parliament, according to PML-N chief Nawaz Sharif.

Sharif asked Zardari to honour a pledge to transfer key powers to his Prime Minister Yusuf Raza Gilani.