From: zztopmyself@gmail.com   
      
   Yes. We have several things that make this planet unique so humans can live.   
      
   1. The distance from our nearest star, the sun, 93 million miles. A million   
   furthur or nearer would mean too hot or too cold to have evolved.   
      
   2. Gravity, in relation to the moon which stops our globe spinning in all   
   directions but keeps us spinning evenly giving us managable seasons, without   
   the moon you'd get - 40 to + 40℃ in one day.   
      
   3. Water. And a layer of atmosphere, stratosphere, ozone that keeps it all   
   here rather than evaporating away and disappearing into space. The atmosphere   
   also filters most of the suns damaging rays that would cook you in 2 seconds   
   if it didn't exist.   
      
   4. Oxygen, Nitrogen are the 2 main gasses we breath at 21% and 78%. If that   
   balance wasn't in place we'd never have existed.   
   On Mars, the air contains 600ppm of carbon monoxide, you'll be dead in an hour   
   just from that. But you'd be dead anyway as oxygen makes up only 1.45% of the   
   atmosphere, under 8 % humans die on earth.   
      
   Yes, there may be life on distant planets, but that life won't look or behave   
   like us because the basic conditions needed for life will not be like ours,   
   luckily.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)