not responding to them.
  Coming back to the pieces of the puzzle that have come into play very 
recently, there has been a lot of debate about global warming; and as 
many things in science do, we have advanced from questions to 
hypotheses to theories to observations to arguments to debates to 
consensus. There is a consensus in the worldwide scientific community 
that humans are now playing a role in climate change that is assuredly 
affecting the globe. And in the last several months, there have been 
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