Listening to silence: Imperial alumnus Ed Prosser talks about his audio art in the latest edition of the Podcast.

Dr Jake Baum discusses how a molecular map of the malaria parasite could help combat drug resistance.

And we hear from Business School students who have developed mobile technology that could bring more medical care to people in Uganda.

The podcast is presented by Gareth Mitchell, a lecturer on Imperial's Science Communication MSc course and the presenter of Click Radio on the BBC World Service, with contributions from our roaming reporters from the Research Communications team.

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News: Stroke therapy and wiping out dinosaurs – Sam Wong discusses a new trial of stem cell treatment for stroke patients and Colin Smith chats about new insights into how bad timing helped bring about the extinction of the dinosaurs.

Molecular map of the malaria parasite: Gail Wilson talks to Dr Jake Baum about investigating the ribosome of the malaria parasite as a target for developing new anti-malarial drugs that could combat resistance.

Sound art and the sound of silence: Gareth Mitchell speaks to Science Communications alumnus Ed Prosser about how he made a piece of sound all about the lack of it.

Mobile medical care in Uganda: Maxine Myers speaks to a prize-winning team from the Business School about their new simple SMS and voice mobile technology that provides doctor consultations to people over the phone in Uganda.