Figuring out what reindeer can hear to understand the impact from industrial sounds; Scientists discover massive river flowing under the Antarctic Ice; A shocking solution to accidental killing of sharks in fisheries; Clawing back: How cougars and grizzlies are reintroducing themselves in Manitoba,

Testing reindeer hearing, a river runs under Antarctica, saving sharks with electricity and cougars and grizzlies return to Manitoba

&lt;p&gt;CBC Radio&apos;s Quirks and Quarks covers the quirks of the expanding universe to the quarks within a single atom... and everything in between.&lt;/p&gt;

Science

Earth Sciences

<p>CBC Radio's Quirks and Quarks covers the quirks of the expanding universe to the quarks within a single atom... and everything in between.</p>

&lt;p&gt;CBC Radio's Quirks and Quarks covers the quirks of the expanding universe to the quarks within a single atom... and everything in between.&lt;/p&gt;

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Testing reindeer hearing, a river runs under Antarctica, saving sharks with electricity and cougars and grizzlies return to Manitoba

Testing reindeer hearing, a river runs under Antarctica, saving sharks with electricity and cougars and grizzlies return to Manitoba