Human beings used fire to cook food hundreds of thousands of years earlier than previously thought, an Israeli-led group of researchers has suggested.They found evidence in the 780,000-year-old remains of a huge carp-like fish discovered in northern Israel.The scientists noted "the transition from eating raw food to eating cooked food had dramatic implications for human development and behaviour".The previous earliest evidence of cooking dated from about 170,000 BC.The remains of the two-metre (6.5ft) fish were found at the Gesher Benot Yaaqob archaeological site which spans the River Jordan about 14km (8.5 miles) north of the Sea of Galilee.Researchers led by...