I'm fascinated by how tiny little things affect world history—take the malaria parasite for instance. Forget the Black Death or the Influenza outbreak of 1917, Malaria has had a bigger impact on humanity than any other rampaging pathogen—yet, we still don't completely understand how it works.
That's changing. Live Science has an article and video illustrating how Plasmodium falciparum and its three relatives work. They're really sneaky.
