<p>Suddenly, 800 tourists arrive on the tiny island of St Helena.</p>
<p>Extremities is made possible by Curiosity Stream. </p>
<p>Sign up for a Curiosity Stream subscription at <a href="http://CuriosityStream.com/ext">http://CuriosityStream.com/ext</a> and get a free subscription to Nebula--the streaming video site that Wendover Productions helped found. On Nebula, find The World's Most Useful Airport--the documentary we produced about St Helena's airport.</p>
