| The Science Show | If Darwinian evolution was the very big idea of last century, what could be the one for the 21st? Dr John Collee, who wrote the script for Creation about Charles Darwin, gives his very surprising selection. The Science Show | Did marsupials originate in South America and cross to Australia, or did they originate in Australia and cross to South America? Fossils of marsupials have been found in Antarctica and now researchers are piecing the jigsaw together. The Science Show | David Attenborough describes what we can learn from footprints, whether they be in sand, though forests, in fossils or in lava flows. The Science Show | Some bacteria produce enzymes and other chemicals which could replace current sources of human nutrients, such as fatty acids. John Bowman explores Antarctica in the hope to find useful bacteria for his studies. All in the Mind | (Repeat) Part 2 of 3: A nurse reflects on life in the asylum during World War II before the dramatic arrival of modern medications, and two sisters reminisce on growing up at Goodna with their matron aunt in the 1930s. Ockham's Razor | Professor Jim Falk from the University of Melbourne discusses governance in a rapidly changing world. The Health Report | Researchers at the University of Sydney say that around 1000 bowel cancer deaths could be prevented if a fully funded, evidence-based bowel cancer screening program was implemented by the Australian government. The Health Report | A surgical trial undertaken in Australia suggests that women having a hysterectomy or removal of ovaries via keyhole surgery rather than abdominal surgery have a 50 per cent reduction in post-operative complication rates. Big Idea | Part one: In the first of this year's Reith Lectures, Lord Martin Rees explores the challenges facing science in the 21st century. Future Tense | Critics of Barack Obama's new space policy say it makes the US a third-rate player and will downgrade the role of human space exploration. We ask Cornell University's Jim Bell for his views.
Innovations | A young chemist, Bianca van Lierop, and her colleagues have succeeded in tweaking the chemical structure of insulin so it is effective when stored at temperatures above four degrees Celsius, creating insulin that needs no refrigeration.
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