Magical insights into the workings of the brain; doping at the Olympics; the drugs that could make exercise redundant; and particle physics meets hip hop

Alok Jha and Ian Sample are joined by Ted Bianco, the Wellcome Trust's director of technology transfer. Plus Edzard Ernst on homeopathy. Solar power from the Sahara. And why Lonesome George may not be feeling so lonesome after all

Ian Sample talks to Nasa administrator Michael Griffin about the space organisation's fiftieth anniversary

The Guardian's science correspondent Ian Sample talks to video game designer Richard Garriott, who will soon become the sixth private citizen to fly to the international space station

Alok Jha is joined by Jelena Bekvalac and Emily Sargent to discuss bones, history and cities. Plus, the future of IVF. And is NASA really taking the, er, urine?