Reuters: Australia’s Greens party is on course to win control of the upper house Senate at elections that loom within weeks and will seek to push environmental policies to the fore of the next government’s agenda. The Labor government is expected to snare a narrow victory at the election, possibly in late August, but regardless of who wins the poll the next government will probably rely on the Greens to pass laws on everything from the economy to the environment. And Greens leader …