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Spending on public transport doesn't just help us tackle climate change, it also helps people in outer suburbs have better access to essential services, and is good for the economy too.
The big sleeper issue around climate change is litigation. Already there are signs that investors, communities and non government organisations will be taking companies to court over their claims on the environment. It is a growing trend
Last year Bronwyn suggested we go through our pantries and freezers and use up the food there instead of buying new items every week. Since about 20% of the average Australian's food purchases end up in landfill, that seemed like a great challenge to me! Have you been keeping it up?
More people are going vegetarian part-time - Meatfree Mondays and Weekday Vegetarians are the new ways to try it out without having to go cold turkey.
How are we going on the 'switch to tap water' challenge? Remember, you're doing your bit to save the environment when you leave the bottle behind.
Let's review how we've been doing on the older challenges - are you still keeping up your good habits? First up - giving up disposable cups when we get takeaway coffee.
The evidence suggests that owners of green buildings can charge higher rents. The value of green buildings is also higher when they are put on the market. Despite the various risks, green buildings are worth developing, not just for the environment but for profit.
So how did you go with getting rid of all those vampire power suckers over the last month? I did pretty well, I think.
What are the best solutions to the problems of chronic drought? What about the costs to the community and business? Recycling, desalination plants and water tanks are all energy intensive. How do we save water, or create adequate supplies, without ruining the environment or sending us broke?
No-one goes out to buy a new TV and thinks "Gee, I'd really like a TV that has a great picture, is affordable, and sucks power even when I'm not using it". We want the best value for money, so making sure there aren't any inefficient products out there is a good start.