Add exercise on comparing visualisations of taxonomic classifications

.gitignore

@@ -41,3 +41,4 @@ services/.DS_Store
 course/.DS_Store
 course/introduction/~$introduction.pptx
 course/.DS_Store
+course/geography/~$geography.pptx

course/taxonomy/index.html

@@ -163,9 +163,13 @@ <h3>Synonyms</h3>
 <p>Bonus question: why has the frequency of usage of names for the <a href="http://synynyms.com/taxon/326924" target="_new"><i>Cavia porcellus</i> (the guinea pig)</a> declined in the 20th century?</p>
 </div>
 
-<div class="example">
+<div class="warning">
+
+<p>An alternative to synynyms is to use the timeline feature in BioStor, 
+e.g. <a href="http://biostor.org/timeline.php?q=Aspidoscelis%20costata,%20Cnemidophorus%20costatus">compare <i>Aspidoscelis costata</i> with <i>Cnemidophorus costatus</i></a>
+<strike>This feature is offline.</strike>
 
-<p>An alternative to synynyms is to use the timeline feature in BioStor, e.g. <a href="http://biostor.org/timeline.php?q=Aspidoscelis%20costata,%20Cnemidophorus%20costatus">compare <i>Aspidoscelis costata</i> with <i>Cnemidophorus costatus</i></a></p>
+</p>
 
 </div>
 
@@ -308,6 +312,40 @@ <h3>Visualing classifications</h3>
 
 </div>
 
+
+
+<div class="example">
+
+<b>Comparing tree visualisations </b>
+
+<p>Create a list of questions to test how useful a tree visualisation is, then evaluate each visualisation.</p>
+
+<p>Possible questions</p>
+
+<ul>
+<li>Can you find a species?</li>
+<li>Can you search using common names?</li>
+<li>Can you find the common ancestor of two species (e.g., human and salmon)?</li>
+<li>Can you get a sense of how many species are in each taxon?</li>
+<li>Do you ever get lost?</li>
+</ul>
+
+<p>Think about other possible questions, and how to test them.</p>
+
+
+<h3>Visualisations</h3>
+
+<ul>
+<li><a href="http://www.onezoom.org/" target="_new">OneZoom</a></li>
+<li><a href="http://lifemap-ncbi.univ-lyon1.fr/" target="_new">OpenTree</a></li>
+<li><a href="https://tree.opentreeoflife.org/" target="_new">LifeMap</a></li>
+</ul>
+
+
+</div>
+
+
+
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 -->
@@ -379,6 +417,16 @@ <h2><a name="barcodes"/>Beyond names: DNA barcodes</h2>
 
 </div>
 
+<h2><a name="future"/>Questions to think about</h2>
+
+<ol>
+<li>How many web sites have machine-readable data available?</li>
+<li>How important are taxonomic names to finding biological information?</li>
+<li>How can we deal with the multiple names? Do we try and reconcile across multiple sources, or pick one as definitive?</li>
+<li>What is the best way to browse a taxonomic classification? How would you decide (i.e., what criteria are relevant?)</li>
+</ol>
+
+
 
 
 <h3>Reading</h3>