West Nile virus is already in the U.S., and more once-subtropical diseases could be on their way.

From the known and treatable (Lyme Disease) to the unpronounceable and potentially deadly (Cryptococcus gattii), climate change is giving nasty diseases a leg up, clearing their way onwards to the U.S.

Increased rainfall, warmer temperatures, dying reefs, and hotter oceans are handing diseases that afflict humans — algal, fungal, mosquito-borne, tick-borne — a chance to spread, meaning diseases previously unheard in the U.S. of are now emerging.