I think Halie's, Emma's, and Sean's PSA had the biggest effect on me.  The affect Halie's and Emma's PSA had on me was that global warming will cause problems in the future not just for polar bears but if the ice caps melt and Emma's blog had an effect on me because trees absorb carbon dioxide and that will slow down global warming.  Sean's blog had an effect on me because I wanted to know what the most effect form of renewable energy was and after the PSAs I think solar power is the most effective.