Wolfram-Alpha answers your questions !

Move over Google, there's a new search engine on the block.
 

Ask Wolfram Alpha a question, and it will give you an answer. 
 
for example, ask it 88 MPH   http://www33.wolframalpha.com/input/?i=88+mph

it will tell you:
 = 141.6 km/h
 = 76.47 knots
 = 3399 km/day
 
and it will also give you a comparison:
 = speed at which Marty McFly needed to drive the Delorean DMC-12 in order to time travel.
 
try "What is the meaning of life?" or "What is the speed of an unladen swallow?"
 
Math Geeks: ask it "P=NP"

 
 
  Here's a site with some Easter Eggs for Wolfram: 
  http://mashable.com/2009/05/17/wolfram-easter-eggs/

 

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