Biotechnology could help to prevent deadly and costly diseases associeted with poor diet, believes David Topping.

Opening the barrages can save the lower lakes but not the Murray River, writes Jennifer Marohasy.

Australia urgently needs an independent panel of geoscientists to act as an 'early warning system' for environmental crises, according to experts.

A study has found that people travelling by car are ten times more likely to be seriously injured than people travelling by train, judging per kilometre travelled.

There are many challenges involved in applying a carbon pollution reduction scheme to Australian agriculture; perhaps while overcoming them we can not only reduce emissions, but also build a more resilient industry for the future, writes Dr Richard Eckard.

Perhaps the drought has been a blessing in disguise for Australians, by making us face up to the problems that have been developing in our environment for decades. Or are we still missing the big picture, only aware of how these problems will affect us, questions Dr Paul Humphries.

The Government’s new green paper shields regional areas from the initial financial blows of reducing carbon emissions, allowing them time to prepare for the future – an opportunity that should be grasped with both hands, believes Barney Foran.

Genetically engineered crops now being grown represent a massive uncontrolled experiment whose outcome is inherently unpredictable, argues Evaggelos Vallianatos.

The most critical problem we now confront is how to provide enough affordable fuel to avoid severe recession before alternative energy can become reality, argues Walter Starck.

Professor Mike Young and Fiona McKenzie comment on the 3 July 2008 Council of Australian Governments (COAG) water agreement.

Focusing on energy security could lead to reaping the harvest of climate security as a by product, according to Jonathan Ariel.

Expecting to meet the carbon challenge without adjusting our cities is like telling your doctor you want a lung cancer cure without giving up smoking, writes Juris Geste.

The renewable energy resources are available - all that is required is the political will and a movement away from orthodox economic thinking, believes Kevin Cox.

Consumers should not be drinking water from local wastewater treatment plants, according to Michael Angove.

Research has found that the North Star, Polaris, has been unpredictably changing its vibrations over the last five years, though it was thought to be becoming more stable.