21 September, 2025
dr-karl-kruszelnicki-science-curiosity-and-the-strangest-questions

Dr Karl Kruszelnicki, a beloved science communicator, has spent decades demystifying complex scientific concepts with his unique blend of enthusiasm and accessibility. As part of Science Week, Dr Karl’s Science Hour, a staple on triple j, is set to leave the studio for the first time in its 48-year history for a live show at the Enmore Theatre in Eora/Sydney on August 11. This event offers a rare opportunity to delve into the personal and professional life of the man behind the microphone.

ABC Entertainment seized the moment to engage in a candid conversation with Dr Karl, exploring everything from his career beginnings to the most bizarre question he’s ever encountered. The live event promises to be a dynamic mix of audience interaction and expert insights, with a few surprises in store.

The Genesis of a Science Enthusiast

Dr Karl’s fascination with science began at a young age. Recalling his first memory of scientific curiosity, he said, “I was coming home from primary school on a hot day, noticing how the bitumen was sticky. We had learned about how black absorbs heat, and I wondered why plants, which absorb sunlight, are green and not black.” This early question marked the start of a lifelong journey into science.

From Aspiring Astronaut to Radio Icon

Dr Karl’s path to becoming a science broadcaster was as unconventional as it was inspiring. In 1981, driven by a passion for NASA’s Space Shuttle program, he applied to be an astronaut, boasting degrees in maths, physics, biomedical engineering, and medicine. Although NASA turned him down, this application led to an unexpected opportunity with triple j. “I rang up and said I’d applied to be an astronaut and knew a lot about the program. They invited me to come in and talk about it,” he recounted.

His impromptu explanation of kidney function to journalist Tony Barrow resulted in the creation of the ‘Great Moments in Science’ segment, cementing his place in radio history. Dr Karl’s ability to engage audiences with scientific topics has kept listeners tuning in for decades.

Curiosity Fuels the Science Hour

Dr Karl attributes the enduring popularity of his Science Hour to the innate curiosity of his audience. “People want to know why the sky is blue or why you can see water vapor when you breathe out on a hot day,” he explained. His show has tackled a wide range of questions, including one particularly memorable inquiry about the temporary deafness experienced during oral sex.

“Almost certainly, this has not been discussed in the medical professional literature, so I had to wing it,” Dr Karl admitted. His explanation involved the Eustachian tube and the physics of pressure on the eardrum.

Dr Karl’s diverse educational background, which he credits to Australia’s once-free university system, allows him to approach such questions with a broad perspective. “I’m not particularly smart,” he insists, “but my very broad education base helps me answer complex scientific questions.”

A Personal Glimpse: Marriage and Fashion

Outside the realm of science, Dr Karl’s life is equally intriguing. He shared the story of his unconventional marriage proposal to his wife, Mary Dobbie, which involved a phone call from a hotel in South East Asia. Despite the line going dead mid-proposal, the couple eventually married in a scientific ceremony inside the Arctic Circle on the longest day of the year.

Dr Karl is also known for his vibrant fashion sense, often sporting brightly patterned shirts. His “rainbow theory of colour dressing” stems from a desire to spread happiness, inspired by a childhood memory of seeing a woman in bright colors on a dreary day. “If you’ve got a choice between happy and sad, I prefer happy,” he said.

What to Expect from the Live Show

The upcoming live show at Enmore Theatre promises to be an interactive experience, with audience questions taking center stage. “We’ll have lots of people who know stuff,” Dr Karl teased, hinting at the presence of experts in the audience. Hosted by triple j Mornings’ Lucy Smith, the event will feature surprise videos and a mix of humor and science.

As Dr Karl continues to inspire curiosity and wonder, his live show is set to be a celebration of science and the joy of discovery. Science with Dr Karl Live will undoubtedly be an unforgettable experience for all who attend.