* Explosion rocks nuclear plant, fuel rods exposed * UN nuclear chief says unlikely to turn into Chernobyl * More than 10,000 feared killed by quake, tsunami * Economic cost put at $180 billion, recession warning By Taiga Uranaka and Ki Joon Kwon FUKUSHIMA, Japan, March 15 (Reuters) – Japanese engineers raced to prevent a meltdown at a stricken nuclear plant on Tuesday, as rescuers scrambled to help millions left without food, water or heating by a devastating earthquake and tsunami. A second explosion rocked the Fukushima nuclear complex on Monday and rapidly failing water levels exposed fuel rods in another reactor, but the United Nations’ nuclear watchdog said the crisis was unlikely to…
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Quake ravaged Japan battles against nuclear meltdown