1m displaced by floods in northern India  · 'National calamity'
after Kosi bursts banks, says PM · Experts say corruption is
largely responsible  More than a million people have been forced
from their homes and 250,000 houses destroyed in one of the
worst floods in northern India for decades, prompting
accusations that the destruction was manmade.  The prime
minister, Manmohan Singh, called the flood a "national calamity"
after the Kosi river burst its banks in Nepal 10 days ago,
sending waves of water across a swath of the eastern flank of
the Himalayas and submerging large parts of the Indian state of
Bihar.  Yesterday the Indian army was mobilised - evacuating
more than 100,000 people and dropping food supplies from the
air. Pratyaya Amrit, Bihar's secretary for disaster management,
said more than 400,000 people would be moved to relief camps by
the weekend.  Singh and Sonia Gandhi, head of the ruling
Congress party, flew over devastated areas by helicopter
yesterday. The prime minister later said more hel