Greening the Concrete Jungle: How to Make Environmentally Friendly Cement

Cement is the world’s most widely used material apart from water, largely because it is the key ingredient in concrete, the world’s favourite building material. But with cement’s success comes a huge amount of greenhouse emissions. For every tonne of cement produced in Australia, 0.82 tonnes of CO₂ is released. That might not sound like much, especially when compared with the 1.8 tonnes emitted in making a tonne of steel. But with a global production of more than 4 billion tonnes a year, cement accounts for about 8% of the world’s CO₂ emissions. The electricity and heat demands of cement production are responsible for …

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Hobart City Council To Phase Out Plastic Takeaway Food Containers

Plastic food containers and utensils used by takeaway stores are set to be phased out by the Hobart City Council in what it is calling a nation-leading move. The council voted 10-12 to amend draft environmental health bylaws, banning single use, petroleum-based plastic containers and utensils by 2020. The architect of the change, Greens Alderman Bill Harvey, said they would be replaced by compostable items. He said the proposal had attracted broad public support. “People are aware now; so many Australians watched War on Waste on the ABC and that’s influenced their understanding of plastic pollution, so this is something …

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