Dr Huy Young Zhu from the Queensland University of Technology talks about nanomesh filters. These filters can be used to filter 'bugs' from water, purify gas and possibly remove HIV from blood.

There's also science news and the science quiz.

Don't forget to write a review on the iTunes store or by 'Digg' the podcast at Digg.com. And if you haven't already, check out Marc West's Mr Science podcast - the link is to the right.

For more information from the Queensland University of Technology.

Welcome to a new format.

In this episode of Science Talk Australia, talk to Dr Russell Keast, about a study he and Dr Lynn Riddell of Deakin University have published. They have found that caffeine does not have the flavour enhancing qualities claimed by soft drink manufacturers.

There's also science news and the science quiz.