Julian Cribb warns that wealthy corporations are seeking to lay claim upon the most natural of human resources - our genes.

Hal Swerissen argues that Australia's primary health care system is in dire need of reform, with more emphasis in the past being placed on upgrading facilities rather than treating common diseases.

Melvin Bolton argues that it is only when people's moral sensibilities are mobilized that real action will be seen in implementing environmental change. 

Extreme weight loss programs, such as The Biggest Loser, are endangering the physical and mental health of their contestants, says Noelle Graham.

Max Rheese argues that a repeat of Black Saturday is inevitable, and advises that more effort be made to control bushfire fuel by prescribed burning. 

Greenpeace anti-whaling campaigning has recently been focusing on educating the Japanes public, who are still surprisingly unaware of their government's actions, writes Junichi Sato.

Peter Spencer's recent hunger strike raised awareness of the human cost of implementing climate change policy in farming areas. Christopher Monckton draws attention to this issue, questioning the scientific basis of these policies in a global context.

According to Tim Wilson, palm oil is substantially more sustainable compared with other oils: it needs less land and less resources to produce more.

Weeding, which causes problems for women in developing countries, can benefit from modern biotechnology, says Jonathan Gressel.

Soil science and agroforestry can help tackle climate change and boost crop yields, say M. S. Swaminathan and Dennis Garrity.