Wolfram 'search engine' goes live

A web tool hailed as a significant rival to search giant Google has gone live to the public.

It aims to give people direct answers to queries rather than send them to other sites where they may find what they are seeking.
The system is the brainchild of British-born physicist Stephen Wolfram.

Source : http://news.bbc.co.uk/2/hi/technology/8052798.stm