How much antimatter do you think it would take to destroy the whole world?

Question: How much antimatter do you think it would take to destroy the whole world?
- Keywords:
  antimatter,
  end of the world,
  universe
Asked by to Daren, Lynne, Phillip, Simon on 17 Jun 2014. This question was also asked by .
- anon answered on 17 Jun 2014:
  
  You need an equal amount of matter and antimatter to create energy and not have one of them left over. So you’d need a whole anti world!
- Lynne Thomas answered on 17 Jun 2014:
  
  That’s a lot of anti-matter! If we did make enough and it combined with normal matter then it would give out a lot of energy and could make a pretty big explosion! I don’t think we have to worry just now as we can’t really make much of it at the moment!

Question: How much antimatter do you think it would take to destroy the whole world?