There are nine countries in the world that are believed to have nuclear weapons and two of them which happen to be neighbors have just had a flare up in their rivalry.
Flu viruses circulate around the world throughout the year but a flare up in the U.S. is most common in the fall and winter hitting it's worst point between December and February according to the Centers for Disease Control.
Part of the reason why these trees can survive for thousands of years is that they often weather the wildfires that flare up here during the late summer and fall.
The state's still in the midst of its fire season when blazes are more likely to flare up but the major wildfires we've told you about have been contained for the most part.