By Felipe Iturrieta SANTIAGO (Reuters) - Ash from the Chilean volcano Calbuco, which erupted without warning this week, reached as far as southern Brazil on Saturday and prompted some airlines to cancel flights to the capitals of Chile, Argentina and Uruguay. Calbuco, considered one of the most dangerous along Chile's chain of around 2,000 volcanoes, erupted twice in 24 hours on Wednesday and Thursday, sending up a spectacular 17-km-high (11-mile) cloud and coating nearby towns in a thick layer of gray ash. Authorities have set up a 20-km (12-mile) cordon around Calbuco, in the scenic Los Lagos region, around 1,000 km (620 miles) south of the capital Santiago, evacuating more than 6,500 people in the area. "The dangerous nature of volcanic activity like this, plus the volcano's current instability that could lead to more intense activity in the short term, indicates we should maintain the perimeter," Chile's national office of emergency said in its latest report.
By Gopal Sharma and Ross Adkin KATHMANDU (Reuters) - Nepal urged countries to send aid to help it cope with the aftermath of a devastating earthquake that killed more than 1,300 people, a toll officials said would rise as the desperate search for survivors continued into the early hours of Sunday. The home ministry said the death toll had reached 1,382. Foreign climbers and their Nepalese guides around Mount Everest were caught by the tremors and a huge avalanche. Hospitals across the impoverished nation of 28 million people struggled to cope with the dead and injured from Nepal's worst quake in 81 years, and a lack of equipment meant rescuers could look no deeper than surface rubble for signs of life.