anchor.diff:          <div class='source_table'>
             <dl class='sources_row'>
               <dt>Function</dt>
  -            <dd>Identifies the world’s last remaining undisturbed forest areas, large enough to retain all native biodiversity and showing no signs of human activity as of the year 2013 and their degradation from 2000-2013.</dd>
  +            <dd>Identifies the world’s last remaining undisturbed forest areas, large enough to retain all native biodiversity and showing no signs of human activity as of the year 2013 and reduction in extent from 2000-2013.</dd>
             </dl>
             <dl class='sources_row even'>
               <dt>RESOLUTION / SCALE</dt>
  
positive.code:         <div class='source_table'>
            <dl class='sources_row'>
              <dt>Function</dt>
              <dd>Identifies the world’s last remaining undisturbed forest areas, large enough to retain all native biodiversity and showing no signs of human activity as of the year 2013 and their degradation from 2000-2013.</dd>
            </dl>
            <dl class='sources_row even'>
              <dt>RESOLUTION / SCALE</dt>
  
negative.code: 
            <p>Changes in the extent of IFLs were identified by contrasting the map for 2013 with the analogous map for 2000, adjusted for consistency. Areas identified as “reduction in extent” met the IFL criteria in 2000, but no longer met the criteria in 2013. The main causes of change were industrial activity such as logging and mining, and fragmentation due to infrastructure and new roads, and fires assumed to be caused by humans.</p>
  
            <p>This data can be used to assess forest intactness, alteration, and degradation at global and regional scales. More information about the dataset and methodology is available on <a href="www.intactforests.org">www.intactforests.org</a></p>
  
            <p class='credits'><strong>Citation:</strong> Potapov P., Yaroshenko A., Turubanova S., Dubinin M., Laestadius L., Thies C., Aksenov D., Egorov A., Yesipova Y., Glushkov I., Karpachevskiy M., Kostikova A., Manisha A., Tsybikova E., Zhuravleva I. 2008. Mapping the World's Intact Forest Landscapes by Remote Sensing. Ecology and Society, 13 (2) http://www.ecologyandsociety.org/vol13/iss2/art51/ </p>
  
            <p class='credits'><strong>Suggested citations for data as displayed on GFW:</strong> Greenpeace, University of Maryland, World Resources Institute and Transparent World. 2014. Intact Forest Landscapes: update and reduction in extent from 2000-2013. Accessed through Global Forest Watch on [date]. www.globalforestwatch.org</p>
  
            <p class='read_more hidden'><em><%= link_to 'Learn more or download data', "#{sources_path}/forest_cover?t=ifl_2013_deg" %></em></p>
          </div>
  