anchor.diff:  
       <li id='imazon' class='source-item'>
         <div class='source_header'>
  -        <strong class='source_title'>Imazon SAD alerts</strong>
  -        <i class='expand_arrow'></i>
  -        <em class='source_description'>(monthly, 250m, Brazilian Amazon)</em>
  +        <strong class='source_title'>SAD alerts</strong>
  +        <i class='expand_arrow'></i>
  +        <em class='source_description'>(monthly, 250m, Brazilian Amazon, Imazon)</em>
         </div>
   
         <div class='source_body'>
  
positive.code: 
       <li id='forestgain' class='source-item '>
        <div class='source_header'>
          <strong class='source_title'>University of Maryland/Google tree cover gain</strong>
          <i class='expand_arrow'></i>
          <em class='source_description'>(12 years, 30m, global)</em>
        </div>
  
        <div class='source_body'>
  
negative.code:   <ul class='sources'>
      <li id='fires' class='source-item'>
        <div class='source_header'>
          <strong class='source_title'>Active fires</strong>
          <i class='expand_arrow'></i>
          <em class='source_description'>(past 7 days, 1km, global, NASA)</em>
        </div>
  
        <div class='source_body'>
  