Physics World Weekly

Medical physicist Nick Zacharopoulos, chief executive of Aktina Medical, talks with Tami Freeman about developing radiation-oncology technologies and combining industry with academic research. He traces a career that began building radiotherapy components with his father, discusses product development at Aktina, and explains how persistence and a conversation with a colleague led him to a doctorate at McGill University.

Hosted by Tami Freeman

Lin Ma discusses the development of batteries for electricity grids, including the promise and limitations of sodium-ion systems. The conversation considers safety, materials choices and the role of storage in electricity systems that depend increasingly on renewable generation.

Hosted by Hamish Johnston