US STOCKS-Futures fall for second day as uncertainty weighs in
* Futures down: Dow 104 pts, S&P 13.5 pts, Nasdaq 33 pts
By Yashaswini Swamynathan
July 6 (Reuters) - U.S. stock index futures were lower for the second day on Wednesday as fears of instability after Britain's vote to leave the European Union added to global growth worries.
* U.S. Treasury yields US10-YT=RR touched a fresh low, while gold hit a two-year high, as investors fled to safe havens.
* The U.S. Federal Reserve will release the minutes of its June meeting at 2:00 p.m. ET (1800 GMT). Traders will peruse the comments for clues on what the Fed may do next.
* Global markets recovered some losses stemming from the Brexit vote last week, but weak economic data and worries over the fallout of the decision has brought back concerns.
* Major Asian and European indexes were trading lower. The British pound touched a new 31-year low, while China allowed the value of the yuan to touch a 5-1/2 year low.
* Oil extended losses for the third straight session as economic concerns and a strong dollar discouraged demand.
* Wall Street closed down lower on Tuesday as disappointing factory data and weak oil prices sent shivers through the markets. Continuación...