http://www.ctvviet.com/ <br />Three days ahead of the Iowa caucuses, CNN Student News is explaining what exactly will happen in the state and why its nomination contests are the first in the U.S. As a mosquito-borne virus spreads "explosively" in the Americas, we're telling you what's known about it, how many infections are predicted, and what actions are being considered in response to it. A nearly priceless potato photo and a Character Study involving definitions of success wrap up our Friday coverage!
