Environment minister Murray Watt is returning from oceans conference where he pledged to curb the scourge of plastics and ratify a treaty to protect the high seas• Sign up for climate and environment editor Adam Morton’s free Clear Air newsletter hereThe federal environment minister, Murray Watt, is returning from a UN oceans conference where he pledged to curb the scourge of plastics and make good on Australia’s promise to ratify a treaty to protect the high seas.The five-day meeting in Nice, France finished on Friday, and conservationists celebrated some key steps towards protecting wildlife in international waters. Continue reading...