Here's why economists are worried about a recession

Fears of a recession haven't let up since the bond market flashed warnings signs in August. Since then, a spate of weak economic data, increasing trade tensions and slowing GDP growth have flashed signs of an economic slowdown. So what's the definition of a recession? If the U.S. economy is in recession, how will we know?
Fri, Oct 11 201911:07 AM EDT