Australia has retained the Ashes after fast bowler Scott Boland led a demolition of the English side, who were all out for 68 in the third Test. The 32-year-old, who was making his Test debut in front of a home crowd at the Melbourne Cricket Ground (MCG), took a remarkable 6/7 to help wrap up the series for the Aussies, who now lead 3-0 in the 5-match Vodafone Series, Cricket Australia reported. Australia took the third Test by an innings and 14 runs despite only scoring 267 in their one turn with the bat. Boland only needed four overs to get his figures of 6/7 in the second innings, and took out the Mullagh Medal as player of the match. England were already 4/31 at the start of play on Tuesday, but seemed to be off to a good start with solid boundaries to skipper Joe Root and Ben Stokes. …