Tech news from Canada<p>Ars Technica: Leonardo da Vinci used toxic pigments when he painted the Mona Lisa <a href="https://arstechnica.com/?p=1978513" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="">arstechnica.com/?p=1978513</span><span class="invisible"></span></a> <a href="https://mastodon.roitsystems.ca/tags/Tech" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Tech</span></a> <a href="https://mastodon.roitsystems.ca/tags/arstechnica" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>arstechnica</span></a> <a href="https://mastodon.roitsystems.ca/tags/IT" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>IT</span></a> <a href="https://mastodon.roitsystems.ca/tags/Technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Technology</span></a> <a href="https://mastodon.roitsystems.ca/tags/infraredspectroscopy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>infraredspectroscopy</span></a> <a href="https://mastodon.roitsystems.ca/tags/chemicalanalysis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>chemicalanalysis</span></a> <a href="https://mastodon.roitsystems.ca/tags/x" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>x</span></a>-raydiffraction <a href="https://mastodon.roitsystems.ca/tags/artconservation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>artconservation</span></a> <a href="https://mastodon.roitsystems.ca/tags/LeonardodaVinci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LeonardodaVinci</span></a> <a href="https://mastodon.roitsystems.ca/tags/chemistry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>chemistry</span></a> <a href="https://mastodon.roitsystems.ca/tags/MonaLisa" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MonaLisa</span></a> <a href="https://mastodon.roitsystems.ca/tags/pigments" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pigments</span></a> <a href="https://mastodon.roitsystems.ca/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a></p>