Thousands of people gathered in Sydney’s Prince Alfred Park Sunday morning to show their support for the federal government’s proposed carbon tax. Rashida Yosufzai reports.

Four Australian guys are driving across the globe attempting to ‘fill-up’ only on biofuel. Jamesina McLeod reports.

Government drawback means solar is growing up, Benjamin Vozzo reports.

Carbon capture storage is promoted by governments and the mining industry worldwide as a solution to climate change. But can it hold up to its promises?Lauren Kelleher reports.

Green business now stands for good business, and Australia’s design and building industry is leading the trend worldwide. Dave Drayton reports.

In the aftermath of the Deepwater Horizon oil spill in April, the world is left wondering how this could happen and more importantly, will it happen again?

Henry Peters reports on the problems associated with having a high density population in Melbourne and what experts think the future might bring.

Kylie Beale takes a closer look at where Australia stands in the global fight to convert to renewable energy options.

Environmentalists want to see a quick closure of Australia’s dirtiest power station by 2012. But workers in the area fear that Gippsland could collapse once more if the government turns its back on them.

Australia has committed to reducing carbon emissions, but traffic is congesting our major cities and pumping out greenhouse gases. Are electric cars the answer?Britta Jorgensen reports.