WolframAlpha is a computational knowledge engine. Which can answer any proper question you submit. If you make any search query in any other search engine. The search engine will crawl billions of web pages and index it which can't always give the answer we are searching.
WolframAlpha computes with it's AI and serves the unexpected  answers, you could never imagine before. Wolfram is dealing with the whole spectrum of knowledge.
Example:
for the search "What is the distance between Bhilai & Portblair?" WolframAlpha returned the results -

• The distance in KMs, Miles, Meters, NMI(Nautical Miles)
• The time taken to travel in car, ship, aircraft, light in vacuum, light in optical fiber and many more.
  

See more examples here.
To Explore wolfram-alpha and expand your knowledge visit http://wolframalpha.com.



Quest WolframAlpha about:

I am a curator at WolfRamAlpha!
Perhaps you too may like to be :)