This week, Google Search debuted a new feature that lets you search by voice command. To search by voice, go to www.google.com and click on the microphone in the search bar. When prompted, speak your search terms.
Your search results will appear as normal. In the future, Google will enable voice response so if you ask a specific question, Google will speak the answer back to you. This feature is still in development so do not expect it anytime soon.
Google has released a short video explaining the new search with voice feature:
Happy Searching!