Dr Karl Kruszelnicki AM just loves science to pieces, and has been spreading the word in print, on TV and radio and online for more than thirty years. The author of 47 books, Dr Karl is a lifetime student with degrees in physics and mathematics, biomedical engineering, medicine and surgery. He has worked as a physicist, labourer, roadie for bands, car mechanic, filmmaker, biomedical engineer, taxi driver, TV weatherman, and medical doctor at the Children's Hospital in Sydney. Since 1995, Dr Karl has been the Julius Sumner Miller Fellow at the University of Sydney. In 2019 he was awarded the UNESCO Kalinga Prize for the Popularisation of Science, of which previous recipients include Margaret Mead, David Attenborough, Bertrand Russell and David Suzuki.