On August 5, 2013, a man and a woman ate a burger. Not just any burger: a world-historical burger, made from cattle cells grown in a lab by Mark Post, a professor of vascular physiology at Maastricht University in the Netherlands. The burger had taken two years to produce and cost $330,000, money furnished by the Google co-founder Sergey Brin. Now it was being tasted in public for the first ...