14 September 2006 BBC News The periodic phenomenon known as El Nino has developed in the Pacific Ocean threatening extreme weather in many parts of the world, US scientists say.
El Ninos begin with a warming of waters in the eastern Pacific, and there has been a steep rise in water temperature in recent weeks, they say.
This El Nino is likely to strengthen towards the end of the year and early into 2007, the researchers add.
However it is not expected to reach the strength of the 1997 phenomenon.
More:http://news.bbc.co.uk/1/hi/sci/tech/5345184.stmWhat you do speaks so loudly that I cannot hear what you say.