Hamburg - There is new evidence that a virus could be the cause of irregular heartbeat in millions of patients who otherwise exhibit no diagnosed reason for atrial or ventricular fibrillation, according to a team of German scientists.

The researchers at the Max Delbruck Center for Molecular Medicine (MDC) in Berlin say they have uncovered the first firm evidence of the molecular mechanism whereby virus infections cause cardiac arrhythmia.

Cologne, Germany - Teenagers commonly experience mood swings and are not always approachable, and this behaviour can make it hard for parents to differentiate such emotional fluctuations from genuine depression.

Experts say it's important for parents to monitor their teenager's moods and seek treatment when warranted.

Hong Kong - Hong

Washington - Want to see what lies ahead in the world of operating systems? Head to the Web.

That's where you'll find some workable examples of operating systems that move everything - applications, files, and communications
- from the confines of your desktop to the more widely accessible Internet.

While the major players in the software industry are not yet among those with Web-based operating system (OS) prototypes, it's clear that the big names are paying attention - and making plans.

Sydney - Australian stocks regist

Singapore - Singaporeans have been told to welcome foreign workers and expatriates because the the labour they contribute is in the city-states's national interest, according to media news reports Monday.

Law Minister K Shanmugam on Sunday said that foreign workers play an important role in building housing, roads and infrastructure in Singapore.