Our wasteful use of so much energy should be reduced and not be allowed to continue to increase, according to Valerie Yule.

Wind power, with a small amount of peak-load back-up, could substitute for several of Australia’s coal-fired power stations, says Mark Diesendorf.

Maintaining Port Phillip Bay’s health should be more about prevention than cure, argues Chris Smyth.

Wind power is the front runner for renewable energy but it will never provide sufficient energy for our base load needs, argues Tom Quirk.

The self-interested attitudes of all of us make our governments afraid to make the tough decision, says Kellie Tranter.

Between now and when the Olympic torch is lit and the 'Green' games begin, 38 new coal-fired power plants will open in China, says David DuByne.

Climate change is a justice issue that is already affecting many of the world's people, writes Emma Brindal.

Australia's limiting shortage of scientists, technologists, engineers and mathematics can be amended with education, encouragement and strong leadership, says David Hind.

Individual health savings accounts will give consumers greater ownership, autonomy and choice in how they manage their health, says Adam Johnston.

After the politically-sanctioned extermination of the thylacine has Tasmania learnt nothing? David Obendorf questions.

Drawing lessons from history and the nuances of international politics, one cannot but question the honesty of the whole issue of climate change, says Bashir Goth.

The Rudd Government, already caught trying to censor science, should commit to supporting freedom of scientific inquiry and speech without delay, warns Julian Cribb.

The only way to allocate the right to emit carbon is where each person, whether from China or Australia, has equal value, argues Nicholas Gruen.

We must consciously, deliberately and ambitiously help developing countries produce and consume energy in a sustainable way, argues Ben Pearson.

Give the tax cuts back to taxpayers, but give it as money in a special healthcare bank account owned by the taxpayer, suggests Kevin Cox.