Native cuisine - alternative diet

Over the past two decades there have been various experiments with changing Western culinary habits by introducing additional species to the human cuisine most often being native species as an alternative to the domestic cattle, sheep and farmed birds. In Australia this has included kangaroos, emus and water buffalo. This has met with only mixed success but of these species, kangaroos have offered the most likely option for adoption into diets. A strong incentive for the uptake of kangaroo can be seen with the following data.

Tonnes per head per year (carbon equivalents)

• 0.003 - Kangaroo
• 0.14 - Sheep
• 1.67 - Cattle

Fat Content per 100kg of raw meat

• 6.3g - Beef (lean fillet)
• 5.8g - Lamb (trimmed steak)
• 1.5g - Chicken
• 1.3g - Kangaroo

[Source: New Scientist No 2781 9 October 2010]

Global warming - facing an unpopular truth

The second Festival of Dangerous Ideas was held at the Sydney Opera House over the October 2010 long weekend featuring an array of topics in 24 separate panel debates and individual presentations. From a climate change perspective, the message remained clear with a projected grim outlook for the planet from 2020 onwards. Of note, the session titled 'We are all Climate Change Deniers' presented by Clive Hamilton, Professor of Public Ethcis at the Centre for Applied Philosophy and Public Ethics demonstrated the stark reality that global warming is occuring and is on a trajectory for a major impact within this century. Even the 2 degree C target would still result in Artic summer ice, Himalayan Tibetan glaciers and the Greenland ice sheet melting. The evidence now shows a temperature rise of between 2 and 4 degrees C which will result in the loss of Amazon rainforest (one of the World's main oxygen generators) and the West Antartic ice sheet as well as many other effects. Yet despite the evidence, there remains vocal and powerful interests that seek to deny there is any risk as well as nullify any debate.

Life beyond in the stars?

The recent pronuncement that Gliese 581g, a planet orbiting the red dwarf star Gliese 581 may be suitable for life should not come as any surprise. Located approximately 20.5 light years away from Earth in the constellation of Libra, the planet is located in the middle of the "Goldilocks" zone, or what is defined as a habitable part of space near its parent star. The existence of liquid water is considered a strong possibility and this condition is generally considered a precursor for life. The planet was discovered by the Lick-Carnegie Exoplanet Survey following a period of over ten years of observations. Gliese 581g is believed to be the first Goldilocks planet ever found being the most earth-like planet with the potential for harboring life. The search for life in the universe continues both through optical astronomy and radio astronomy (the SETI program). The question remains, if life is found, what would the human race do?