Reference works, such as dictionaries and encyclopedias, can be a good place to start.
The following resources are useful for in-depth searching.
Reuters Top News
Reuters Top News is available via Thomson One: a real-time global news service covering business, markets, politics and economics news tailored by industry and region. In Thomson One, choose 'market view' to open Reuters top News.
Thomson One only works with the Internet Explorer browser and it only functions fully in compatibility view mode. Access this mode as follows: go to Tools menu (see the cog) and then choose Compatibility View Settings. Internet explorer can be found via the Windows Start menu: scroll down to open the Windows Accessories folder.