David Ellyard has been in science and technology all his working life. Trained in physics and education, he has been a researcher, a high-school and university teacher, writer, lecturer, radio and TV broadcaster and a government policy advisor. As a result he has a multi-sided understanding of science and technology and their place in today's, and tomorrow's, world. He spent 6 years with the ABC's Radio Science Unit where he pioneering talking science on 'popular' radio, and an equal period in ABC TV as a researcher, producer and presenter on Towards 2000, Quantum and Skywatch. He also spent 6 years presenting the weather on Channel 10 in Sydney. David has written ten books on weather, astronomy and current developments in science and technology, as well as an award-winning biography of Australian physicist Sir Mark Oliphant. He is a lively and provocative speaker.