Stocks are falling once again today, with the S&P 500 headed for its worst session in almost two years, as a much weaker-than-anticipated July jobs report ignited worries that the economy could be falling into a recession. Prior to the jobs report, traders were banging the table for the Fed to lower interest rates by a quarter percentage point in September. Now, markets are pushing for it to cut rates by at least half a point. We’ll tell you all you need to know.