&gt; This species at present could wipe out almost all life from the planet (if it wanted, which it doesn&#x27;t) in multiple ways<p>That&#x27;s interesting.  How could it?  Please present a plausible scenario (more plausible than &quot;The US president decides to cover the globe with nuclear explosions, and everyone with any degree of influence over the process just lets him do it&quot;).