change icon for ozone2

Author: chrisorban

docs/projects/ozone2.html

@@ -218,7 +218,7 @@ <h1 class="title">Ozone layer recovery (Part 2)</h1>
 
 <div class="quarto-figure quarto-figure-center">
 <figure class="figure">
-<p><img src="../img/ozone.jpg" class="quarto-figure quarto-figure-center figure-img" height="300"></p>
+<p><img src="../img/esa_ozone_hole.png" class="quarto-figure quarto-figure-center figure-img" height="300"></p>
 </figure>
 </div>
 <p>Let’s look at the Ozone data from the NASA Earth System Data Explorer</p>
@@ -318,7 +318,7 @@ <h2 class="anchored" data-anchor-id="step-6.-look-at-the-nasa-ozone-watch-data">
 <ul>
 <li>In 1987, a United Nations <a href="https://en.wikipedia.org/wiki/Montreal_Protocol">treaty</a> was signed to phase out globally the manufacturing of chemicals that deplete the Ozone layer. If you were alive in 1987 and could see NASA’s Ozone measurements from 1979 to 1987, what would you have been worried about for what the future might be like?</li>
 </ul>
-<p>Sidebar: The <a href="https://atmosphere.copernicus.eu/smallest-and-shortest-lived-ozone-hole-5-years-closes">European Space Agency</a> has <a href="esa_ozone_hole.png">a visualization</a> of the Ozone hole versus year from 1979 to the modern day.</p>
+<p>The <a href="https://atmosphere.copernicus.eu/smallest-and-shortest-lived-ozone-hole-5-years-closes">European Space Agency</a> has <a href="esa_ozone_hole.png">a visualization</a> of the Ozone hole versus year from 1979 to the modern day which is at the <a href="ozone2.html#top">top</a> of this activity.</p>
 </section>
 <section id="optional-extension-1" class="level2">
 <h2 class="anchored" data-anchor-id="optional-extension-1">Optional Extension #1</h2>

projects/ozone2.qmd

@@ -1,6 +1,6 @@
 ---
 title: "Ozone layer recovery (Part 2)"
-image: ../img/ozone.jpg
+image: ../img/esa_ozone_hole.png
 categories:
     - Atmospheric Science
     - Environmental Science
@@ -9,7 +9,7 @@ categories:
     - Spreadsheets
 ---
 
-![](../img/ozone.jpg){height=300 fig-align="center"}
+![](../img/esa_ozone_hole.png){height=300 fig-align="center"}
 
 Let's look at the Ozone data from the NASA Earth System Data Explorer
 
@@ -128,7 +128,7 @@ Here is a new question:
 
 * In 1987, a United Nations [treaty](https://en.wikipedia.org/wiki/Montreal_Protocol) was signed to phase out globally the manufacturing of chemicals that deplete the Ozone layer. If you were alive in 1987 and could see NASA's Ozone measurements from 1979 to 1987, what would you have been worried about for what the future might be like?
 
-Sidebar: The [European Space Agency](https://atmosphere.copernicus.eu/smallest-and-shortest-lived-ozone-hole-5-years-closes) has [a visualization](esa_ozone_hole.png) of the Ozone hole versus year from 1979 to the modern day.
+The [European Space Agency](https://atmosphere.copernicus.eu/smallest-and-shortest-lived-ozone-hole-5-years-closes) has [a visualization](esa_ozone_hole.png) of the Ozone hole versus year from 1979 to the modern day which is at the [top](ozone2.html#top) of this activity.
 
 ## Optional Extension #1