Oil slides on world economy fears

Oil has closed at a two-month low on more troubling signs for the world economy.   Benchmark US crude dropped by US$1.44 to US$101.02 ($123.90) per barrel in New York on Tuesday while Brent crude lost US$2.79 to US$119.88 per barrel in London. Natural gas fell to a 10-year low. Global stock markets also declined, along with the prices of most industrial metals.   There was fresh concern about.