![Ai Group's Julie Toth said market mechanisms should be used to meet national commitments to substantially cut emissions.](/web/20170220050138im_/http://www.smh.com.au/content/dam/images/g/u/3/w/b/f/image.related.square.80x75.gugn0r.10rdjm.png/1487566386619.jpg)
![The most expensive sale of the weekend: 47 Stanley Street, Chatswood, sold for $4.955 million.](/web/20170220050138im_/http://www.smh.com.au/content/dam/images/g/u/g/9/7/u/image.related.square.80x75.gug7zc.11w2dh.png/1487549065401.jpg)
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