We humans don&amp;#8217;t put much thought into the complicated mechanics of making the sounds of different vowels. But it&amp;#8217;s a bit trickier if you&amp;#8217;re a robot. Nevertheless, Hideyuki Sawada, a professor at Kagawa University in Japan, has improved his prototype mechanical mouth. Videos of it surfaced last year, but hey &amp;#8211; now the creepy robot [...]