The Ebola virus is rapidly spreading in dense African cities, threatening to destabilize some of the most unsettled democracies on the continent — and potentially mutating into dangerous new forms. By decapitating Westerners and ethnically-cleansing ancient Yazidis, the Islaic State threatens to destabilize the Middle East — and its terrorism could potentially mutate into dangerous new forms.

Which one of these frightening possibilities scares you the most? Tell us in our totally-unscientific poll!

[yop_poll id=”7″]