Following a deadly shooting at a Toronto festival, many are calling for harsher punishments on illegal guns and tighter security at events; A new Canadian Medical Journal report is raising the alarm about the spread of anaplasmosis, a tick-borne disease that can be fatal; and, Jared Gross, 17, and his friends intentionally ditched their smartphones for flip phones. Kathy Le reports on what scans of their brains revealed to researchers.

<p>Following a deadly shooting at a Toronto festival, many are calling for harsher punishments on illegal guns and tighter security at events; A new Canadian Medical Journal report is raising the alarm about the spread of anaplasmosis, a tick-borne disease that can be fatal; and, Jared Gross, 17, and his friends intentionally ditched their smartphones for flip phones. Kathy Le reports on what scans of their brains revealed to researchers.</p>

CTV National News is Canada's most-watched national news program. Now you can stay up to date Monday to Sunday with the CTV National News Podcast, delivered nightly. Listen to Canada’s most trusted newscast featuring stories from here and around the world with a perspective that is distinctly Canadian and backed by the #1 news organization in Canada.

<p>CTV National News is Canada's most-watched national news program. Now you can stay up to date Monday to Sunday with the CTV National News Podcast, delivered nightly. Listen to Canada&rsquo;s most trusted newscast featuring stories from here and around the world with a perspective that is distinctly Canadian and backed by the #1 news organization in Canada.</p>