In a nutshell, as the USA appears to be struggling to stay out of recession, the fear that we will have one spans about the globe. This is because the USA imports so much product from so many countries. If we go into a recession, that means we won't be buying/importing all that product from other countries, and they will also feel the effects.

Since there isn't much any one person can do to immediately change this, it's best to learn what you can do for yourself to guard against any recession having a big impact upon you.