New Delhi, Aug. 2 -- The Supreme Court has taken suo motu cognizance of what it said was grave ecological crisis facing Himachal Pradesh, warning that unscientific construction and development could cause the entire hill state to "vanish into thin air" from India's map. The court partly blamed "unscientific construction" for recent natural disasters, and said that tourism pressure fuelled by "human greed and apathy" is undermining the state's ecological fabric. P6...