London, Nov 18 : A team of geophysicists is developing a large radio-controlled toy helicopter that could help predict when a volcano will blow its top.

When fresh, eruption-ready magma arrives deep in the heart of a volcano, it tends to release carbon dioxide (CO2).

As the magma rises, it also pushes sulfur dioxide out of the volcano. Spotting changes in the ratio of these gases around a volcano should indicate whether it is about to blow.

But although vulcanologists routinely measure sulfur dioxide, taking carbon dioxide measurements is a much bigger challenge.

Carbon dioxide levels in the atmosphere are incredibly high compared to levels of sulfur dioxide.

London  - A leading convicted member of the militant Basque separatist group ETA, who is wanted by Spain, will fight his extradition from Britain, a court in Northern Ireland was told Monday.

Ignacio de Juana Chaos, 53, was granted bail by a judge at the Recorder's Court in Belfast Monday, where he will have to appear again on November 28. He had earlier surrendered for "arrest by agreement."

Judge Tom Burgess said the Spaniard was granted bail under a series of strict conditions, including a night-time curfew and daily reporting to the police.

Moscow  - Works by William Turner, one of Britain's most prized artists, went on display Monday at Moscow's Pushkin Museum, the first time the artists' works have been exhibited in Russia in 33 years.

The show, which borrows the works from London's Tate Britain gallery, is entirely sponsored by Russian metals tycoon Alisher Usmanov, the largest shareholder in the London-based Arsenal football team. It comes despite the current financial crisis and diplomatic relations between the two capitals that have been on eggshells in recent years.

London  - A leading convicted member of the militant Basque separatist group ETA, who is wanted by Spain, will fight his extradition from Britain, a court in Northern Ireland was told Monday.

Ignacio de Juana Chaos, 53, appeared at the Recorder's Court in Belfast Monday after surrendering for "arrest by agreement" ahead of the proceedings.

Defence barrister Sean Devine told the court that his client did not consent to extradition request and would fight it. The arrest warrant provided by the Spanish authorities was "fundamentally flawed," said Devine.