Half of all Europe's flights were back in the air Tuesday, but more ash from Iceland's erupting volcano threatened to stall plans to reopen British airspace - including at London's Heathrow, one of the world's busiest airports.
Eruptions from the Eyjafjallajokull volcano are weakening, authorities in Iceland reported, but volcanic ash already in the air continued to blow towards Britain.
Gary Tuchman is reporting live from Iceland where he'll have the latest developments on the erupting volcano and its impact on travel delays. CNN Meteorologist Chad Myers will also answer questions about what to expect. Do you have questions? Let us know!
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