by How It Works Team · 02/06/2012
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How was the first US president elected?
What are the differences between lager, ale and beer?
What were farm animals like before domestication?
What are the differences between chimpanzees and bonobos?
What do ‘good bacteria’ do in our bodies?
What is the difference between table salt and sea salt?
How do electron microscopes work?
Why do people get scared of spiders?
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