Ross Garnaut, an adviser to the Australian government on climate change matters, is asking people to give up their beef and lamb-based meals and shift to kangaroo meat if they want to help save the planet. According to a new study by the University of New South Wales economist, farming kangaroos instead of sheep or cattle could lower national greenhouse gases in Australia by 3 percent a year. The belching and farting of millions of farm animals is a major contributor to Australia's greenhouse gas emissions, Professor Garnaut noted in his report to the government. Methane from the foregut of cattle and sheep constitutes 11 percent of Australia's total greenhouse emissions, but kangaroos produce negligible amounts of methane.
Every now and then you see a statement like “a great future source of energy is hydrogen.” Such statements are lies—hydrogen is only an energy carrier or transfer media and not a substance capable of providing new energy. Hydrogen will never be a source of new energy here on Earth until we figure out how to make nuclear fusion work. This is because chemical uses of hydrogen, be it fuel cells or internal combustion (IC) engines, only work if you start out with free hydrogen: H2 .
One of the central points presented in The Resilient Earth is the fundamental immaturity of climate science and how unreasonable it is to ask for accurate predictions working from the current state of both climate theory and available data. We used the formulation of the three pillars of science—theory, experiment and computation—as the framework of our argument. As an example why we take this stand consider a recent article in the journal Science.